Perhaps you should try some spelling variations:
chieu tinh » trieu tinh, lieu tinh, chau tinh
nhanh dung » nhanh dong, nhanh hung, thanh dung
duong manh » duong van
hanh dung » thanh dung, anh dung, hanh dong
cong manh » cong danh, cong thanh, hoang manh
ho chieu » theo chieu, hoc thieu, doi chieu
toan tap » toan 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 - ((nhanh dung) OR (hanh dung)) cua ban ((cong manh) or (duong manh)) toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu tinh - ((nhanh dung) OR (hanh dung)) cua ban ((cong manh) OR (duong manh)) toan tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu tinh - ((nhanh dung) OR (hanh dung)) cua ban ((cong manh) or (duong manh)) toan tap".
• Adding a wildcard symbol may retrieve word variants: ho chieu tinh - ((nhanh dung) OR (hanh dung)) cua ban ((cong manh) or (duong manh)) toan tap*.