Perhaps you should try some spelling variations:
hanh trang » thanh trung, canh tranh, hanh trinh
nang cong » nang song, dang cong, bang cong
cong tinh » cong trinh, cong vinh, long tinh
ho chieu » theo chieu, hoc thieu, doi chieu
anh tang » anh bang, anh dang, anh nang
toan ban » van ban
va nang » van nang, da nang, cam nang

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((theo tieu) or (ho chieu)) sang - ((anh tang) or (hanh trang)) va nang cong tinh toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((theo tieu) OR (ho chieu)) sang - ((anh tang) OR (hanh trang)) va nang cong tinh toan ban.
• Adding a wildcard symbol may retrieve word variants: ((theo tieu) or (ho chieu)) sang - ((anh tang) or (hanh trang)) va nang cong tinh toan ban*.