Perhaps you should try some spelling variations:
thieu manh » hieu manh, tien manh, trieu minh
hoc thieu » toc thieu, hoc hien
canh tinh » manh tinh, canh tranh, nhanh tinh
hanh tinh » hanh trinh, nhanh tinh, thanh tinh
va thong » va phuong, he thong, va cong
cong san » cong tac
pham dau » phan dau, pham dac, pham dat

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 manh - ((canh tinh) or (hanh tinh)) ((va thong) OR (va thuong)) cong san pham dau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu manh - ((canh tinh) OR (hanh tinh)) ((va thong) OR (va thuong)) cong san pham dau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu manh - ((canh tinh) or (hanh tinh)) ((va thong) OR (va thuong)) cong san pham dau".
• Adding a wildcard symbol may retrieve word variants: hoc thieu manh - ((canh tinh) or (hanh tinh)) ((va thong) OR (va thuong)) cong san pham dau*.