Perhaps you should try some spelling variations:
thiet nang » nhiet nang, thien nang, thi nang
thong cong » trong cong, tong cong, thong thong
hoc thiet » hoc thieu, hoc thuyet, hoc hien
trang cua » tranh cua, tang cua, trung cua
manh cua » doanh cua, ban cua
cong tan » cong tac, cong san, cong thanh
tan toan » tan tran, tap toan, van toan
toan ban » van ban

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 nang - hanh ((trang cua) or (manh cua)) thong cong tan toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thiet nang - hanh ((trang cua) OR (manh cua)) thong cong tan toan ban.
• Adding a wildcard symbol may retrieve word variants: hoc thiet nang - hanh ((trang cua) or (manh cua)) thong cong tan toan ban*.