Perhaps you should try some spelling variations:
chieu sang » chieu sach, chieu xanh, hieu lang
hieu quang » thieu quang, hieu quan, hieu qua
hanh dung » thanh dung, anh dung, hanh dong
dung cong » dung trong
cong manh » cong danh, duong manh, cong thanh
manh toan » thanh toan, anh tuan, tinh toan
hieu van » hieu va, thien van, lieu va
cho dung » cho dong, cho ung, cao dung
toan ban » van ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo ((((hieu van) or (hieu quang))) or (chieu sang)) - hanh dung cho dung cong manh toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((((hieu van) OR (hieu quang))) OR (chieu sang)) - hanh dung cho dung cong manh toan ban.
• Adding a wildcard symbol may retrieve word variants: theo ((((hieu van) or (hieu quang))) or (chieu sang)) - hanh dung cho dung cong manh toan ban*.