Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
trinh quan » tinh quang, trinh luat, trinh han
nhung cong » dung cong, thong cong, hang cong
hoc thieu » toc thieu, hoc hien
cong tac » cong ty
phan dau » hang dau
tinh va » tich va, trinh van, trinh vat

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 - canh ((tinh va) or (trinh quan)) nhung cong tac ((phan dau) or (phan tu))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu xanh - canh ((tinh va) OR (trinh quan)) nhung cong tac ((phan dau) OR (phan tu)).
• Adding a wildcard symbol may retrieve word variants: hoc thieu xanh - canh ((tinh va) or (trinh quan)) nhung cong tac ((phan dau) or (phan tu))*.