Perhaps you should try some spelling variations:
tuan vai » tuan tai, trang vai, tuan khai
sach thu » sach thue, sach thieu, sach tham
van tuan » van quan, van ban, anh tuan
nang mai » nang ma, nang tai, lang mai
vai cua » dai cua, hai cua, lai cua
soc van » hoc van, oc van, sac van
ve cham » va cham, ve chat, vu cham
mai hoi » mai khoi, dai hoi, lai hoi
hieu ve » hieu va, hieu van
sach ty » sach tu, xach tay, sach hay
cua tre » cua te, cuu tre, cua triet

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 ty) OR (sach thu))) or (sach y)) nang mai hoi. hieu ve cham soc van tuan vai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((((sach ty) OR (sach thu))) OR (sach y)) nang mai hoi. hieu ve cham soc van tuan vai cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((((sach ty) OR (sach thu))) or (sach y)) nang mai hoi. hieu ve cham soc van tuan vai cua tre".
• Adding a wildcard symbol may retrieve word variants: tu ((((sach ty) OR (sach thu))) or (sach y)) nang mai hoi. hieu ve cham soc van tuan vai cua tre*.