Perhaps you should try some spelling variations:
thieu tach » thien hach, chiet tach, chieu sach
hoc thieu » toc thieu, hoc hien
bang cong » dang cong, bang song, hang cong
tuong va » truong va, thuong va, luong va
cong tay » cong ty, cong tac, cong tan
tung va » trung va, dung va, vung va
tay tao » tai tao, tay cao, cay tao
tao cao » bao cao, 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 thieu tach - thanh ((tung va) or (tuong va)) bang cong tay tao cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu tach - thanh ((tung va) OR (tuong va)) bang cong tay tao cao.
• Adding a wildcard symbol may retrieve word variants: hoc thieu tach - thanh ((tung va) or (tuong va)) bang cong tay tao cao*.