Perhaps you should try some spelling variations:
vu khach » vu khac, vay khach, cua khach
vu khanh » vu thanh, van khanh, duy khanh
nang doc » nang luc
hanh vai » hanh vi, hanh va, hanh tai
doc hoi » duoc hoi, hoc hoi, doc hai
qua cac » cua cac
va hanh » van hanh, va thanh, va danh
vai cua » dai cua, hai cua, lai cua
cua tre » cua te, cuu tre, cua triet
cac tu » cac thu, cach tu, cac du

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((vu bach) or (((vu khach) OR (vu khanh)))) ky nang doc hoi. hieu qua cac tu va hanh vai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((vu bach) OR (((vu khach) OR (vu khanh)))) ky nang doc hoi. hieu qua cac tu va hanh vai cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((vu bach) or (((vu khach) OR (vu khanh)))) ky nang doc hoi. hieu qua cac tu va hanh vai cua tre*".