Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
hanh trang » thanh trung, canh tranh, hanh trinh
tong thong » thong thong, dong thong, cong thong
trang cua » tranh cua, tang cua, trung cua
cua tong » cua cong, cua dong, cua nong
tac toan » tap toan, tam toan, hach toan
tam than » ban than

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc thieu xanh - hanh trang cua tong thong ((tac toan) or (tam than)) tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc thieu xanh - hanh trang cua tong thong ((tac toan) OR (tam than)) tap.
• Adding a wildcard symbol may retrieve word variants: toc thieu xanh - hanh trang cua tong thong ((tac toan) or (tam than)) tap*.