Perhaps you should try some spelling variations:
nhieu viec » hieu viec, nhien viet
cua triet » cua viet, su triet, va triet
nang mai » nang ma, nang tai, lang mai
viec dai » vien dai, viec tai, viec dat
dai thuc » dan thuc, dai thu, dai thua
thuc cao » thuoc cao, thuc co, thuc can
te sach » toc sach
sach ty » sach y, sach tu, sach thu
ty nang » ky nang, ty xang, ty hang
mai hoi » mai khoi, dai hoi, lai hoi
cao dan » cao dang, cao danh, cac dan
dan vi » doan vi, don vi, dan va
vi cua » vai cua, di cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach ty nang mai hoi. nhieu viec dai thuc cao dan vi cua triet~.
• Adding a wildcard symbol may retrieve word variants: te sach ty nang mai hoi. nhieu viec dai thuc cao dan vi cua triet*.