Perhaps you should try some spelling variations:
thong trong » thuong trong, thong thong, thong thuong
theo chieu » theo tieu, ho chieu, theo chu
hanh trinh » hanh chinh
hoc thieu » toc thieu, hoc hien
cua thong » cua thuong, cua khong, cua tong
trong san » trong cac, cong san, dong san
san toan » van toan, dan toan, manh toan
toan ban » van 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 chieu)) xanh - ((canh tranh) or (hanh trinh)) cua thong trong san toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc thieu) OR (theo chieu)) xanh - ((canh tranh) OR (hanh trinh)) cua thong trong san toan ban.
• Adding a wildcard symbol may retrieve word variants: ((hoc thieu) or (theo chieu)) xanh - ((canh tranh) or (hanh trinh)) cua thong trong san toan ban*.