Perhaps you should try some spelling variations:
chieu tinh » trieu tinh, lieu tinh, chau tinh
chiet tach » chieu sach
hanh trung » thanh trung, hanh trang, manh trung
nhung cong » dung cong, thong cong, hang cong
trung va » truong va, trang va, trung ha
cong dan » cong san, cong tan, huong dan
toan cau » toan cao, toan tap, toan tai
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: hoc ((chieu tinh) or (chiet tach)) - hanh trung va nhung cong dan ((toan cau) or (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((chieu tinh) OR (chiet tach)) - hanh trung va nhung cong dan ((toan cau) OR (toan ban)).
• Adding a wildcard symbol may retrieve word variants: hoc ((chieu tinh) or (chiet tach)) - hanh trung va nhung cong dan ((toan cau) or (toan ban))*.