Perhaps you should try some spelling variations:
chieu sang » chieu sach, chieu xanh, nhieu tang
thong cong » trong cong, tong cong, thong thong
hieu lang » hieu quang, nhieu tang, hieu van
manh hung » anh huong
cap thong » cap tong, chap thuong, phap thong
hung cap » cung cap, hung ca, trung cap
cong san » cong tac
phan tap » phan lap, pha tap, phan tu
han tap » han tai, toan tap, nhan tai

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 lang) OR (chieu sang)) - manh hung cap thong cong san ((phan tap) or (han tap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((hieu lang) OR (chieu sang)) - manh hung cap thong cong san ((phan tap) OR (han tap)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((hieu lang) OR (chieu sang)) - manh hung cap thong cong san ((phan tap) or (han tap))".
• Adding a wildcard symbol may retrieve word variants: theo ((hieu lang) OR (chieu sang)) - manh hung cap thong cong san ((phan tap) or (han tap))*.