Perhaps you should try some spelling variations:
thieu tinh » trieu tinh, chieu tinh, thien tinh
cong thanh » dong thanh, cong trinh, cong tan
hoc thieu » toc thieu, hoc hien
trang cua » tranh cua, tang cua, trung cua
cong tac » cong ty
toan cao » toan ban, toan tap
ban cua » ban quan

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 tinh - hanh ((trang cua) or (ban cua)) dang ((cong thanh) or (cong tac)) toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu tinh - hanh ((trang cua) OR (ban cua)) dang ((cong thanh) OR (cong tac)) toan cao.
• Adding a wildcard symbol may retrieve word variants: hoc thieu tinh - hanh ((trang cua) or (ban cua)) dang ((cong thanh) or (cong tac)) toan cao*.