Perhaps you should try some spelling variations:
hoac khong » hoa khong, hoc khong, hay khong
hanh trinh » canh tranh, hanh chinh
hoc chinh » hoan chinh, hoc sinh, hoc kinh
hua khong » hoa khong, cua khong, phuc khong
thanh lap » thanh san, phan lap, thanh hai
than cap » khan cap, thanh cac, than 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 chinh sach - hanh trinh ((hua khong) or (hoac khong)) huong dan ((than cap) or (thanh lap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chinh sach - hanh trinh ((hua khong) OR (hoac khong)) huong dan ((than cap) OR (thanh lap)).
• Adding a wildcard symbol may retrieve word variants: hoc chinh sach - hanh trinh ((hua khong) or (hoac khong)) huong dan ((than cap) or (thanh lap))*.