Perhaps you should try some spelling variations:
hanh trang » thanh trung, canh tranh, hanh trinh
theo chieu » theo tieu, ho chieu, theo chu
chu quang » chat quang, vu quang
song tinh » cong tinh, long tinh, dong tinh
doc hieu » toc thieu, hoc thieu, hoc hien
toan ban » van ban
chuc » thuc, chua, phuc

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((theo chieu) or (doc hieu)) xanh - hanh trang ((chu quang) or (chuc nang)) song tinh toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((theo chieu) OR (doc hieu)) xanh - hanh trang ((chu quang) OR (chuc nang)) song tinh toan ban.
• Adding a wildcard symbol may retrieve word variants: ((theo chieu) or (doc hieu)) xanh - hanh trang ((chu quang) or (chuc nang)) song tinh toan ban*.