Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
tang van » dang van, hoang van, trong van
van hanh » van thanh, ban hanh, van anh
sang ma » tang ma, nang ma, sang tao
sach vu » sach va, sach tu, sach uu
xuc van » duc van, luc van, vuc van
hanh ki » hanh vi, hanh ky, hanh kien
su tien » su kien, su hien, tu tieng
ki su » ky su

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu sach vu ((sang ma) or (tang van)) hoi. ((lieu va) or (hieu qua)) cam xuc van hanh ki su tien~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach vu ((sang ma) OR (tang van)) hoi. ((lieu va) OR (hieu qua)) cam xuc van hanh ki su tien.
• Adding a wildcard symbol may retrieve word variants: thu sach vu ((sang ma) or (tang van)) hoi. ((lieu va) or (hieu qua)) cam xuc van hanh ki su tien*.