Perhaps you should try some spelling variations:
sach van » sach han, bach van, cach van
van hanh » van thanh, ban hanh, van anh
tang van » dang van, hoang van, trong van
hanh va » hang va, hanh vi
xuc van » duc van, luc van, vuc van
cac xuc » cam xuc, cac nuoc, chat xuc
hieu ve » hieu va, hieu van
nang ma » tang ma, sang ma, nang cao
sach va » sach xa, sach ha, sach dao
su tien » su kien, su hien, tu tieng
ve cac » va cac, vien cac

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 van) or (sach va)) ((nang ma) or (tang van)) hoi. hieu ve cac xuc van hanh va su tien~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach van) OR (sach va)) ((nang ma) OR (tang van)) hoi. hieu ve cac xuc van hanh va su tien.
• Adding a wildcard symbol may retrieve word variants: tu ((sach van) or (sach va)) ((nang ma) or (tang van)) hoi. hieu ve cac xuc van hanh va su tien*.