Perhaps you should try some spelling variations:
sieu viet » su viet, bien viet, viet viet
hieu viec » nhieu viec, hieu ve, hieu hien
dien viet » tieng viet, trien viet, gian viet
tu sach » thu sach, su sach, te sach
nang ma » tang ma, sang ma, nang cao
hang di » hang doi, hang vi, hang dien
va hang » van hang, va nang, va lang
cac xuc » cam xuc, cac nuoc, chat xuc
di cua » dai cua, doi cua, de cua
xuc va » duc va, tuc va, luc va
y nang » ky nang, ly nang, v nang
ma hoi » mai hoi, xa hoi, ma hoa
cua te » cua tu

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 y nang ma hoi. ((hieu viec) or (((sieu viet) or (dien viet)))) cac xuc va hang di cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach y nang ma hoi. ((hieu viec) OR (((sieu viet) OR (dien viet)))) cac xuc va hang di cua te.
• Adding a wildcard symbol may retrieve word variants: tu sach y nang ma hoi. ((hieu viec) or (((sieu viet) or (dien viet)))) cac xuc va hang di cua te*.