Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
trinh viet » ninh viet, trinh vat
cang thang » cong thanh, dang thanh
hoc thieu » toc thieu, hoc hien
dung cong » dung trong
cong cang » cong cong, cong lang, cong vang
thang lao » tang lao, thanh lap, thang loi
trinh va » trinh van, trinh vat, trinh ve
trinh vi » trinh ve, trinh van, trinh tai

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 ((trinh va) or (((trinh vi) OR (trinh viet)))) dung cong cang thang lao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu xanh - canh ((trinh va) OR (((trinh vi) OR (trinh viet)))) dung cong cang thang lao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu xanh - canh ((trinh va) or (((trinh vi) OR (trinh viet)))) dung cong cang thang lao".
• Adding a wildcard symbol may retrieve word variants: hoc thieu xanh - canh ((trinh va) or (((trinh vi) OR (trinh viet)))) dung cong cang thang lao*.