Perhaps you should try some spelling variations:
hieu viec » nhieu viec, hieu ve, sieu viet
cau tren » cu tren, dau tren, ca tren
lang van » dang van, tang van, hoang van
viec cac » vien cac, viec cua, viec lam
thu sach » tu sach, thuat sach, thuoc sach
ky lang » ky nang, ky dang, ky tang
van hoi » van hoa, van hoc, van hoe
cac xuc » cam xuc, cac nuoc, chat xuc
cua tre » cua te, cuu tre, cua triet
su sach » so sach, vu sach
xuc va » duc va, tuc va, luc va
va dan » ca dan, va dao, va dau
dan vi » doan vi, don vi, dan va

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

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