Perhaps you should try some spelling variations:
thanh trung » thanh tung
thieu hach » thien hach, chieu sach, hieu cach
hoc thieu » toc thieu, hoc hien
ban thanh » ban hanh, ban hang
thanh cau » thanh chau, thanh mau, nhanh cau
cua dang » cua ban
cong ban » cong bang, cong san, cong tan

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