Perhaps you should try some spelling variations:
vu khach » vu khanh, vu khac, vay khach
van quan » van ban
van tuan » van ban, anh tuan
tu sach » thu sach, su sach, te sach
hoi cua » hoi chuc
hieu va » lieu va, hieu qua
va pham » van pham, va phat, va phap
nang co » nang cao, nang doc, nang noi
co hoi » co hoc, co loi
cua tu » cua tuc, cua su, cua cu

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((tu sach) or (vu khach)) ky nang co hoi. hieu va pham duc ((van tuan) or (van quan)) hoi cua tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (vu khach)) ky nang co hoi. hieu va pham duc ((van tuan) OR (van quan)) hoi cua tu.
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (vu khach)) ky nang co hoi. hieu va pham duc ((van tuan) or (van quan)) hoi cua tu*.