Perhaps you should try some spelling variations:
van hanh » van thanh, ban hanh, van anh
cham xuc » cam xuc, chat xuc, cham soc
lang van » dang van, tang van, hoang van
tu sach » thu sach, su sach, te sach
cua tre » cua te, cua triet, dua tren
xuc van » duc van, luc van, xuc ban
ve cham » va cham, ve chat, vu cham
hieu ve » hieu va, hieu van
sach ky » sac ky, sach y, sach ty
sang ma » tang ma, nang ma, sang tao
cuu tre » cau tren, cau treo

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 ky ((sang ma) or (lang van)) hoi. hieu ve cham xuc van hanh vi ((cua tre) or (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky ((sang ma) OR (lang van)) hoi. hieu ve cham xuc van hanh vi ((cua tre) OR (cuu tre)).
• Adding a wildcard symbol may retrieve word variants: tu sach ky ((sang ma) or (lang van)) hoi. hieu ve cham xuc van hanh vi ((cua tre) or (cuu tre))*.