The phrase "thus usually" is grammatically correct and can be used in written English.
It is typically used to indicate a general or customary situation or action that is expected or commonly seen. Here is an example: "Thus, it is usually recommended to consult with a doctor before starting any new exercise regimen."
Thus, usually the PCEA (patient controlled epidural analgesia) and PCIA are both usual options of postoperative pain-control procedures.
The instruction to hold your nerve is thus usually synonymous with a plea not to overthrow the leader.
Saturated fat and trans fat are thus usually considered unhealthy fats.
Seniority systems could hurt blacks because they were often recently hired and were thus usually the first workers laid off during downturns.
There are commonly nine directors selected for each year group and thus usually nine films made in each unit.
Active catalysts are thus usually highly porous solids with total surface areas as high as several hundred square metres per gram.
Human intelligence sources are thus usually more effective than technical ones because motives and opportunities to act are very hard to read from a distance through opaque data.
Many immunodeficiency disorders are caused by a genetic defect in some component of the system and thus usually manifest early in life.
Allies thus usually air their concerns in private.The problem with Mr Snowden's revelations is that they bring such hypocrisy into the open, which puts democratic pressure on allies to criticise it.This, at least, is the theory.
In an era of renewed tension between America and China in the region, Myanmar's recent opening up is thus usually interpreted by these experts as a tilt towards the West, all part of America's "pivot" towards Asia.
In oligopoly, a few big firms compete with each other, but not primarily by trying to charge the lowest prices, which are thus usually higher than in a perfectly competitive market.
