Perhaps you should try some spelling variations:
nhieu tang » hieu lang, nhiet nang
chieu sang » chieu sach, chieu xanh, hieu lang
hanh trang » thanh trung, canh tranh, hanh trinh
thong than » thong thanh, thong phan, thong nhan
trang cua » tranh cua, tang cua, trung cua
cua thong » cua thuong, cua khong, cua tong
thong tan » thong tran, thong tin, thong van
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 ((nhieu tang) or (chieu sang)) - hanh trang cua thong ((thong tan) OR (thong than)) toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((nhieu tang) OR (chieu sang)) - hanh trang cua thong ((thong tan) OR (thong than)) toan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((nhieu tang) or (chieu sang)) - hanh trang cua thong ((thong tan) OR (thong than)) toan cau".
• Adding a wildcard symbol may retrieve word variants: hoc ((nhieu tang) or (chieu sang)) - hanh trang cua thong ((thong tan) OR (thong than)) toan cau*.