"very few obstacles" is grammatically correct and can be used in written English.
It means that there are only a small number of barriers or challenges in a situation. Example: Despite facing very few obstacles, the team was able to complete the project ahead of schedule.
A typical jail, however, takes very few precautions to put obstacles between that despair and the act of self-harm.
Familiar and well thought-out ideas on how to better treat asylum seekers abounded, but very few addressed their common obstacle – most Australians don't want to treat asylum seekers better.
Very few papers have focused on curved obstacles, and in particular, for curved multiply-connected domains (domains having holes).
Nevertheless, in [34] the solution causes the robots to move very slowly, while in [15] only a few obstacles are taken into account.
Things happen for a reason, I'm sure the man upstairs is guiding me along the way, putting a few obstacles in the way but I feel very happy with life.
Recently, various functional construction materials based on carbon nanotubes (CNTs) are being researched; however, there are very few examples of practical use due to cost and workability obstacles.
On the basis of these experiments which involved very few doctors, it seems that the costs incurred are an obstacle to their generalization [ 17].
If you are a teen or child who would like to convert to Judaism, realize that very few rabbis will let you convert, and you also have the obstacle of family not allowing you to practice your faith.
My main comments addressed to the authors would pertain to the major obstacles that conservation initiatives have been confronted with over the decades, leading to very few success stories even to this day.
One obstacle in connecting robust control with models generated from prediction error identification is that very few control design methods are able to directly cope with the ellipsoidal parametric uncertainty regions that are generated by such identification methods.
