Perhaps you should try some spelling variations:
thieu sach » chieu sach, thien hach, hieu cach
nhung cong » dung cong, thong cong, hang cong
hoc thieu » toc thieu, hoc hien
trung va » truong va, trung ha, trung tam
trang va » tran van, hang va
cong tam » cong tac, cong tan, cong nam
tam toan » tap toan, tam than, pham toan
toan cau » toan cao, toan ban, toan tap

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 ((trung va) or (trang va)) nhung cong tam toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu sach - thanh ((trung va) OR (trang va)) nhung cong tam toan cau.
• Adding a wildcard symbol may retrieve word variants: hoc thieu sach - thanh ((trung va) or (trang va)) nhung cong tam toan cau*.