Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
hanh trinh » canh tranh, hanh chinh
nhung cong » dung cong, thong cong, hang cong
hoc thieu » toc thieu, hoc hien
trinh vat » trinh van, trinh luat, sinh vat
vat nhung » va nhung, vap nhung, vai nhung
van toan » van tuan, van tan, van thanh
tap doan » tap quan

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 trinh vat nhung cong ((van toan) or (tap doan)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu xanh - hanh trinh vat nhung cong ((van toan) OR (tap doan)) cau.
• Adding a wildcard symbol may retrieve word variants: hoc thieu xanh - hanh trinh vat nhung cong ((van toan) or (tap doan)) cau*.