Perhaps you should try some spelling variations:
van trinh » van thinh, van tinh, dan trinh
hieu viec » nhieu viec, hieu ve, sieu viet
thu sach » tu sach, thuat sach, thuoc sach
viec cam » viec lam, viec cua, viec va
trinh do » trinh ky
su sach » so sach, vu sach
ky lang » ky nang, ky dang, ky tang
lang xa » lang ha, dang xay, lang van
cam tuc » cam xuc, cam tu, nam thuc
tuc van » thuc van, truc van, tuc va
cua tre » cua te, cuu tre, cua triet
do cua » doi cua, co cua, de cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((thu sach) or (su sach)) ky lang xa hoi. hieu viec cam tuc van trinh do cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thu sach) OR (su sach)) ky lang xa hoi. hieu viec cam tuc van trinh do cua tre.
• Adding a wildcard symbol may retrieve word variants: ((thu sach) or (su sach)) ky lang xa hoi. hieu viec cam tuc van trinh do cua tre*.