Perhaps you should try some spelling variations:
chieu sang » chieu sach, chieu xanh, nhieu tang
hieu lang » hieu quang, nhieu tang, hieu van
ganh nang » anh nang, nganh nong, van nang
nang doc » nang luc
doc cong » hoc cong, duc cong, do cong
dong dan » dong danh, duong dan, dong san
than cau » toan cau, phan cau, thanh chau
than cap » khan cap, thanh lap, thanh cac

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoi ((hieu lang) or (chieu sang)) - ganh nang doc cong dong dan ((than cau) OR (than cap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoi ((hieu lang) OR (chieu sang)) - ganh nang doc cong dong dan ((than cau) OR (than cap)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoi ((hieu lang) or (chieu sang)) - ganh nang doc cong dong dan ((than cau) OR (than cap))".
• Adding a wildcard symbol may retrieve word variants: hoi ((hieu lang) or (chieu sang)) - ganh nang doc cong dong dan ((than cau) OR (than cap))*.