Perhaps you should try some spelling variations:
chieu sang » chieu sach, chieu xanh, hieu lang
nhieu tang » hieu lang, nhiet nang
hanh trinh » canh tranh, hanh chinh
cong thanh » dong thanh, cong trinh, cong tan
thanh toan » thanh hoa, thanh san, tinh toan
trinh dap » trinh lap, trinh da, trinh dan
tong cong » trong cong, cong cong, dung cong
dap tong » cap tong, dao tong, gap trong
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: hoc ((chieu sang) or (nhieu tang)) - hanh trinh dap tong cong thanh toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((chieu sang) OR (nhieu tang)) - hanh trinh dap tong cong thanh toan cau*.