Perhaps you should try some spelling variations:
doc sach » hoc sach, toc sach, nuoc sach
van nang » van quang, van ban, van dong
nang hai » hang hai, nang tai, dang hai
nang ma » tang ma, sang ma, nang cao
va cham » va tham
va chat » van chat, va phat, cao chat
xuc van » duc van, luc van, vuc van
hai cua » thai cua, dai cua, hoi cua
y nang » ky nang, ly nang, v nang
ma hoi » mai hoi, xa hoi, ma hoa
cua te » cua tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: doc sach y nang ma hoi. lieu ((va cham) or (va chat)) xuc van nang hai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc sach y nang ma hoi. lieu ((va cham) OR (va chat)) xuc van nang hai cua te.
• Adding a wildcard symbol may retrieve word variants: doc sach y nang ma hoi. lieu ((va cham) or (va chat)) xuc van nang hai cua te*.