Perhaps you should try some spelling variations:
thiet tach » chiet tach, thien hach, thuat tach
trang tuan » tran tuan, trung tuan, trong tuan
hoc thiet » hoc thieu, hoc thuyet, hoc hien
trang qua » trong qua, trong quan, trung quan
cong vang » cong lang, cong quang, cong ngang
vang tay » vung tay, bang tay, mang tay
tay cao » tao cao, tay co, toan cao

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: hoc thiet tach - hanh ((trang qua) or (trang tuan)) trong cong vang tay cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thiet tach - hanh ((trang qua) OR (trang tuan)) trong cong vang tay cao.
• Adding a wildcard symbol may retrieve word variants: hoc thiet tach - hanh ((trang qua) or (trang tuan)) trong cong vang tay cao*.