Perhaps you should try some spelling variations:
thieu sach » chieu sach, thien hach, hieu cach
thanh tung » thanh cong
tran nhung » tranh nhung, tran hung, tren nhung
hoc thieu » toc thieu, hoc hien
tung tran » trung tran, hung tran, huong tran
cong dan » cong san, huong dan, cong dong
cong tan » cong tac, cong san, cong thanh
chan cau » can cau, chinh cau, nhanh cau
phan cau » phan dau, phan cac, phan tu

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 - thanh tung tran nhung ((cong dan) or (cong tan)) ((chan cau) or (phan cau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu sach - thanh tung tran nhung ((cong dan) OR (cong tan)) ((chan cau) OR (phan cau)).
• Adding a wildcard symbol may retrieve word variants: hoc thieu sach - thanh tung tran nhung ((cong dan) or (cong tan)) ((chan cau) or (phan cau))*.