Perhaps you should try some spelling variations:
hoac khong » hoa khong, hoc khong, hay khong
chieu sang » chieu sach, chieu xanh, hieu lang
hanh manh » lanh manh, hoang manh, thanh minh
hanh mang » nhanh mang, hanh trang, nhanh lang
ho chieu » theo chieu, hoc thieu, doi chieu
cong tac » cong ty
tran cao » toan cao, tran chau, trang cho

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 sang - ((hanh manh) or (hanh mang)) hoac khong ((cong san) OR (cong tac)) tran cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sang - ((hanh manh) OR (hanh mang)) hoac khong ((cong san) OR (cong tac)) tran cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu sang - ((hanh manh) or (hanh mang)) hoac khong ((cong san) OR (cong tac)) tran cao".
• Adding a wildcard symbol may retrieve word variants: ho chieu sang - ((hanh manh) or (hanh mang)) hoac khong ((cong san) OR (cong tac)) tran cao*.