Perhaps you should try some spelling variations:
hoc thieu » toc thieu, hoc hien
mot chieu » doi chieu, ho chieu
va phuong » va thuong, cac phuong
va thong » va thuong, he thong, va cong
cong dan » cong san, cong tan, huong dan
dan than » dan chan, ban than, van than
than tap » toan tap, han tap, phan tap

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) or (mot chieu)) xanh - thanh cong ((va thong) OR (va phuong)) cong dan than tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc thieu) OR (mot chieu)) xanh - thanh cong ((va thong) OR (va phuong)) cong dan than tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((hoc thieu) or (mot chieu)) xanh - thanh cong ((va thong) OR (va phuong)) cong dan than tap".
• Adding a wildcard symbol may retrieve word variants: ((hoc thieu) or (mot chieu)) xanh - thanh cong ((va thong) OR (va phuong)) cong dan than tap*.