Perhaps you should try some spelling variations:
chieu sang » chieu sach, chieu xanh, hieu lang
trinh vat » trinh van, trinh luat, sinh vat
dung cong » dung trong
nhanh cau » nhanh cay, thanh chau, nhanh ha
ho chieu » theo chieu, hoc thieu, doi chieu
trinh ve » trinh he, trinh va, trinh vi
cong ban » cong bang, cong san, cong tan
hanh cau » hang cau, hanh cac, hanh cat

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 - canh ((trinh vat) or (trinh ve)) dung cong ban ((hanh cau) or (nhanh cau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sang - canh ((trinh vat) OR (trinh ve)) dung cong ban ((hanh cau) OR (nhanh cau)).
• Adding a wildcard symbol may retrieve word variants: ho chieu sang - canh ((trinh vat) or (trinh ve)) dung cong ban ((hanh cau) or (nhanh cau))*.