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 dan » cong san, cong tan, huong dan
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 dan ((toan cau) or (van ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu sach - thanh ((trung va) OR (trang va)) nhung cong dan ((toan cau) OR (van ban)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu sach - thanh ((trung va) OR (trang va)) nhung cong dan ((toan cau) or (van ban))".
• Adding a wildcard symbol may retrieve word variants: hoc thieu sach - thanh ((trung va) OR (trang va)) nhung cong dan ((toan cau) or (van ban))*.