Perhaps you should try some spelling variations:
doi chieu » doc hieu, doi chi, mot chieu
hanh dung » thanh dung, anh dung, hanh dong
phan cong » thanh cong
cong khan » cong khanh, cong nhan, cong phan
khan phap » han phap, phan phap, khanh pham
dung dat » dung va, dung tai
dat phan » data phan, dam phan, sat phan
phap lap » phan lap, phap lam, phap luat

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((doi chieu) or (toc thieu)) sang - hanh dung dat phan cong khan phap lap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doi chieu) OR (toc thieu)) sang - hanh dung dat phan cong khan phap lap.
• Adding a wildcard symbol may retrieve word variants: ((doi chieu) or (toc thieu)) sang - hanh dung dat phan cong khan phap lap*.