Perhaps you should try some spelling variations:
dat tren » dat trong, dua tren
van chat » cao chat
va thanh » gia thanh, ban thanh, va tinh
ban hanh » ban hang
van cham » van tham, va cham, van pham
sach ty » sach y, sach tu, sach thu
ty nang » ky nang, ty xang, ty hang
vai dat » cai dat, va dat, van dat
tu sach » thu sach, su sach, te sach
x hoi » xa hoi, o hoi, x ho

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 nang x hoi. hieu ((van cham) or (van chat)) xuc ((ban hanh) or (va thanh)) vai dat tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ty nang x hoi. hieu ((van cham) OR (van chat)) xuc ((ban hanh) OR (va thanh)) vai dat tren.
• Adding a wildcard symbol may retrieve word variants: tu sach ty nang x hoi. hieu ((van cham) or (van chat)) xuc ((ban hanh) or (va thanh)) vai dat tren*.