Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
thanh tung » thanh cong
hoc thieu » toc thieu, hoc hien
cua dung » cua dang, cua dong, cua rung
qua dung » quang dung, su dung, qua song
cong tan » cong tac, cong san, cong thanh
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 thieu xanh - thanh tung ((cua dung) or (qua dung)) ((cong tan) or (cong trinh)) toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu xanh - thanh tung ((cua dung) OR (qua dung)) ((cong tan) OR (cong trinh)) toan cau.
• Adding a wildcard symbol may retrieve word variants: hoc thieu xanh - thanh tung ((cua dung) or (qua dung)) ((cong tan) or (cong trinh)) toan cau*.