Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
hanh trinh » canh tranh, hanh chinh
hoc thieu » toc thieu, hoc hien
trinh vat » trinh van, trinh luat, sinh vat
vat hang » van hang, dat hang, va hang
cong van » cong vang, song van, cong tan
cong san » cong tac
tuan cac » thuan cam, quanh cac, thanh cac

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 hang ((cong van) OR (cong san)) tuan cac~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu xanh - hanh trinh vat hang ((cong van) OR (cong san)) tuan cac*".