Perhaps you should try some spelling variations:
hieu viec » nhieu viec, hieu ve, sieu viet
cau tren » cu tren, dau tren, ca tren
su triet » su viet, su tien, ve triet
dan hang » ban hang, van hang, dat hang
thuc dan » thuc hanh, hoc dan, thuc vat
viec lam » viec va
lam thuc » lam thuoc, am thuc, nam thuc
ky tang » ky nang, ky dang, kho tang
hang di » hang doi, hang vi, hang dien
ky lang » ky nang, ky dang, tay lang
tu sac » tu sach, tu cac, tu san

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sac ((ky lang) or (ky tang)) xa hoi. hieu viec lam thuc dan hang di ((su triet) or (cau tren))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sac ((ky lang) OR (ky tang)) xa hoi. hieu viec lam thuc dan hang di ((su triet) OR (cau tren)).
• Adding a wildcard symbol may retrieve word variants: tu sac ((ky lang) or (ky tang)) xa hoi. hieu viec lam thuc dan hang di ((su triet) or (cau tren))*.