Perhaps you should try some spelling variations:
hanh tranh » canh tranh, hanh trinh, hanh trang
hoc thieu » toc thieu, hoc hien
tranh cua » doanh cua, manh cua
cua nhung » va nhung
huong van » huong dan, hong van, luong van
duong van » duong va, luong va, dang van
theo chu » theo chieu, cho chu, chao chu
toan tap » toan ban

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 (theo chu)) xanh - hanh tranh cua nhung ((huong van) OR (duong van)) toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc thieu) OR (theo chu)) xanh - hanh tranh cua nhung ((huong van) OR (duong van)) toan tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((hoc thieu) or (theo chu)) xanh - hanh tranh cua nhung ((huong van) OR (duong van)) toan tap".
• Adding a wildcard symbol may retrieve word variants: ((hoc thieu) or (theo chu)) xanh - hanh tranh cua nhung ((huong van) OR (duong van)) toan tap*.