Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
chiet tach » chieu sach
trinh luan » trinh luat, trinh quan, trinh han
luan chung » luan chinh
chung cong » nhung cong, chong cong, phung cong
hieu cach » hieu cac, chieu sach, hieu ca
quang cao » nang cao, quang nam
cong van » cong vang, cong san, song van
quan cua » quan luan, ban cua, gian cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((hieu cach) or (chiet tach)) - hanh trinh luan chung cong van ((quang cao) or (quan cua))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hieu cach) OR (chiet tach)) - hanh trinh luan chung cong van ((quang cao) OR (quan cua)).
• Adding a wildcard symbol may retrieve word variants: hoc ((hieu cach) or (chiet tach)) - hanh trinh luan chung cong van ((quang cao) or (quan cua))*.