Perhaps you should try some spelling variations:
nhieu tang » chieu sang, nhiet nang
chieu xanh » chieu sach, chieu sang, chieu tinh
hanh trinh » canh tranh, hanh chinh
hieu lang » chieu sang, hieu quang, hieu van
nang cong » nang song, dang cong, bang cong
trinh va » trinh van, trinh vat, trinh ve
cong dan » cong san, cong tan, huong dan
dan toan » van toan, dan than, manh toan
toan cau » toan cao, toan ban, toan tap
va nang » van nang, da nang, cam nang

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo ((((nhieu tang) OR (hieu lang))) or (chieu xanh)) - hanh trinh va nang cong dan toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((((nhieu tang) OR (hieu lang))) OR (chieu xanh)) - hanh trinh va nang cong dan toan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((((nhieu tang) OR (hieu lang))) or (chieu xanh)) - hanh trinh va nang cong dan toan cau".
• Adding a wildcard symbol may retrieve word variants: theo ((((nhieu tang) OR (hieu lang))) or (chieu xanh)) - hanh trinh va nang cong dan toan cau*.