Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
chieu tinh » trieu tinh, lieu tinh, chau tinh
ho chieu » theo chieu, hoc thieu, doi chieu
cong dan » cong san, cong tan, huong dan
dan toan » van toan, dan than, manh toan
toan cau » toan cao, toan ban, toan tap
manh va » hanh va, anh va, minh va
sinh va » sinh vat, tinh va, dinh van

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

• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu tinh - canh ((manh va) OR (sinh va)) nhung cong dan toan cau~.
• Adding a wildcard symbol may retrieve word variants: ho chieu tinh - canh ((manh va) or (sinh va)) nhung cong dan toan cau*.