Perhaps you should try some spelling variations:
sach thi » sach thu, sach tai, sach thieu
sang cho » danh cho, sang tao, dong cho
van hanh » van thanh, ban hanh, van ban
te sach » toc sach
hieu ve » hieu va, hieu van
cac xuc » cam xuc, cac nuoc, chat xuc
van anh » van thanh, tuan anh, van minh
ve cac » va cac, vien cac
vi cua » vai cua, di cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach thi ((sang cho) OR (dung cho)) hoc. hieu ve cac xuc ((van hanh) or (van anh)) vi cua cac~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach thi ((sang cho) OR (dung cho)) hoc. hieu ve cac xuc ((van hanh) OR (van anh)) vi cua cac*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach thi ((sang cho) OR (dung cho)) hoc. hieu ve cac xuc ((van hanh) or (van anh)) vi cua cac*".