Perhaps you should try some spelling variations:
chieu tinh » trieu tinh, lieu tinh, chau tinh
chieu sach » chinh sach, chiet tach, chieu sang
thanh tung » thanh cong
hieu tuong » hieu truong, bieu tuong, dieu tuong
tung hieu » trung hieu, dung hieu, tang hieu
cong tap » cuong tap, cong tac, tong tap
cong tan » cong tac, cong san, cong thanh
toan ban » van ban

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ho ((chieu tinh) or (chieu sach)) - thanh tung hieu tuong ((cong tap) OR (cong tan)) toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu tinh) OR (chieu sach)) - thanh tung hieu tuong ((cong tap) OR (cong tan)) toan ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((chieu tinh) or (chieu sach)) - thanh tung hieu tuong ((cong tap) OR (cong tan)) toan ban".
• Adding a wildcard symbol may retrieve word variants: ho ((chieu tinh) or (chieu sach)) - thanh tung hieu tuong ((cong tap) OR (cong tan)) toan ban*.