Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
hieu xanh » chieu xanh, hieu manh, hieu nganh
doc hieu » toc thieu, hoc thieu, hoc hien
ve trong » ke trong, te trong, ve tuong
le trong » ly trong, le tang
le trung » do trung
cong san » cong tac
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: doc hieu xanh - hanh trinh ((ve trong) or (((le trong) OR (le trung)))) cong san toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc hieu xanh - hanh trinh ((ve trong) OR (((le trong) OR (le trung)))) cong san toan ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doc hieu xanh - hanh trinh ((ve trong) or (((le trong) OR (le trung)))) cong san toan ban".
• Adding a wildcard symbol may retrieve word variants: doc hieu xanh - hanh trinh ((ve trong) or (((le trong) OR (le trung)))) cong san toan ban*.