Perhaps you should try some spelling variations:
chieu tinh » trieu tinh, lieu tinh, chau tinh
nhung cong » dung cong, thong cong, hang cong
hanh dung » thanh dung, anh dung, manh dung
hanh dong » anh dong, ha dong
bang cong » dang cong, bang song, hang cong
ho chieu » theo chieu, hoc thieu, doi chieu
tan phan » toan phan, than phan, van phan
phan dau » phan tu, hang dau

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 - ((hanh dung) OR (hanh dong)) luan ((nhung cong) or (bang cong)) tan phan dau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu tinh - ((hanh dung) OR (hanh dong)) luan ((nhung cong) OR (bang cong)) tan phan dau*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu tinh - ((hanh dung) OR (hanh dong)) luan ((nhung cong) or (bang cong)) tan phan dau*".