Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
hoc thieu » toc thieu, hoc hien
tran hang » tran hoang, tranh hang, tran thang
lang cong » dang cong, bang cong, hang cong
thanh cac » hanh cac, thanh bac, thanh ca
cong tac » cong ty
va lang » va nang, hoa lang

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 - tran hang va lang cong tac ((phan tu) or (thanh cac))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu xanh - tran hang va lang cong tac ((phan tu) OR (thanh cac)).
• Adding a wildcard symbol may retrieve word variants: hoc thieu xanh - tran hang va lang cong tac ((phan tu) or (thanh cac))*.