Perhaps you should try some spelling variations:
chieu tinh » trieu tinh, lieu tinh, chau tinh
chieu sach » chinh sach, chiet tach, chieu sang
hanh trung » thanh trung, hanh trang, manh trung
trung phat » truong phat, trong phat, trung phan
phat dung » pham dung, phan dung, thuat dung
dung cong » dung trong
cong dan » cong san, cong tan, huong dan
dan toan » van toan, dan than, manh 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 ((chieu tinh) or (chieu sach)) - hanh trung phat dung cong dan toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((chieu tinh) OR (chieu sach)) - hanh trung phat dung cong dan toan cau.
• Adding a wildcard symbol may retrieve word variants: hoc ((chieu tinh) or (chieu sach)) - hanh trung phat dung cong dan toan cau*.