Perhaps you should try some spelling variations:
chieu sang » chieu sach, chieu xanh, hieu lang
nhieu tang » hieu lang, nhiet nang
thong cong » trong cong, tong cong, thong thong
mang vua » mang cua, mang va, bang va
cong tac » cong ty
tac toan » tap toan, tam toan, hach toan
toan cau » toan cao, toan ban, toan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo ((chieu sang) or (nhieu tang)) - hanh ((mang vua) or (hang va)) thong cong tac toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chieu sang) OR (nhieu tang)) - hanh ((mang vua) OR (hang va)) thong cong tac toan cau.
• Adding a wildcard symbol may retrieve word variants: theo ((chieu sang) or (nhieu tang)) - hanh ((mang vua) or (hang va)) thong cong tac toan cau*.