Perhaps you should try some spelling variations:
hoc sach » hoc sinh, hoc cac, hoc anh
hanh vai » hanh vi, hanh va, hanh tai
van hanh » van thanh, ban hanh, van anh
dang xay » dang van, van xay
cham xuc » cam xuc, chat xuc, cham soc
ve cham » va cham, ve chat, vu cham
vai cua » dai cua, hai cua, lai cua
xuc van » duc van, luc van, vuc van
bo sach » co sach
hieu ve » hieu va, hieu van
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: ((bo sach) or (hoc sach)) ky ((nang x) or (dang xay)) hoi. hieu ve cham xuc van hanh vai cua tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((bo sach) OR (hoc sach)) ky ((nang x) OR (dang xay)) hoi. hieu ve cham xuc van hanh vai cua tu.
• Adding a wildcard symbol may retrieve word variants: ((bo sach) or (hoc sach)) ky ((nang x) or (dang xay)) hoi. hieu ve cham xuc van hanh vai cua tu*.