Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
hoc thieu » toc thieu, hoc hien
hanh cong » hang cong, hanh dong, nhanh chong
trong van » trong cac
san dung » van dung, dan dung, tan dung
van tan » van tuan, van ban, van tai
tan cau » toan cau, van cau, tan ca

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 - ((hanh cong) or (thanh cong)) san dung trong van tan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu xanh - ((hanh cong) OR (thanh cong)) san dung trong van tan cau.
• Adding a wildcard symbol may retrieve word variants: hoc thieu xanh - ((hanh cong) or (thanh cong)) san dung trong van tan cau*.