Perhaps you should try some spelling variations:
trinh han » trinh quan
trinh van » trinh quan, trinh toan, dinh van
lang dong » lang trong, lao dong, cong dong
dong dan » dong danh, duong dan, dong san
dan toan » van toan, dan than, manh toan
toan cau » toan cao, toan ban, toan tap
doi chi » doi khi

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ((doi chi) or (theo tieu)) xanh - hanh ((trinh han) or (trinh van)) lang dong dan toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doi chi) OR (theo tieu)) xanh - hanh ((trinh han) OR (trinh van)) lang dong dan toan cau.
• Adding a wildcard symbol may retrieve word variants: ((doi chi) or (theo tieu)) xanh - hanh ((trinh han) or (trinh van)) lang dong dan toan cau*.