Perhaps you should try some spelling variations:
thieu sach » chieu sach, thien hach, hieu cach
cong thanh » dong thanh, cong trinh, cong tan
hoc thieu » toc thieu, hoc hien
hanh manh » hanh mang, lanh manh, hoang manh
cua tong » cua cong, cua dong, cua nong
cua dang » cua cong, cua ban
cong san » cong tac
tran cao » toan cao, tran chau, trang cho

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