Perhaps you should try some spelling variations:
vu khach » vu khanh, vu khac, vay khach
hanh vai » hanh vi, hanh va, hanh tai
su sach » so sach
vu sach » vu bach
ty nang » ky nang, ty xang, ty hang
nang ma » tang ma, sang ma, nang cao
hieu ve » hieu va, hieu van
va hanh » van hanh, va thanh, va danh
vai cua » dai cua, hai cua, lai cua
ve cac » va cac, vien cac
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: ((((su sach) or (vu sach))) or (vu khach)) ty nang ma hoa. hieu ve cac tu va hanh vai cua vat~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((((su sach) OR (vu sach))) OR (vu khach)) ty nang ma hoa. hieu ve cac tu va hanh vai cua vat.
• Adding a wildcard symbol may retrieve word variants: ((((su sach) or (vu sach))) or (vu khach)) ty nang ma hoa. hieu ve cac tu va hanh vai cua vat*.