Perhaps you should try some spelling variations:
tuan vai » tuan tai, trang vai, tuan khai
van tuan » van quan, van ban, anh tuan
cham sat » cham mat, cham soc, khao sat
hieu vu » hieu va, hieu ve, hieu su
vai cua » dai cua, hai cua, lai cua
sat van » sat va, hat van, hoat van
vu cham » va cham, vu kham, tu cham
sach ty » sach tu, sach thu, xach tay
nang ma » tang ma, sang ma, mang may
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 y)) ((nang ma) or (nang cao)) hoi. hieu vu cham sat van tuan vai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach ty) OR (sach y)) ((nang ma) OR (nang cao)) hoi. hieu vu cham sat van tuan vai cua tre.
• Adding a wildcard symbol may retrieve word variants: tu ((sach ty) or (sach y)) ((nang ma) or (nang cao)) hoi. hieu vu cham sat van tuan vai cua tre*.