Perhaps you should try some spelling variations:
trien viet » tieng viet
hieu viec » nhieu viec, hieu ve, sieu viet
tu sach » thu sach, su sach, te sach
tinh di » tinh doi, trinh di, tinh da
ky lang » ky nang, ky dang, tay lang
ky tang » ky nang, ky dang, kho tang
cam luc » cam xuc, cau luc
luc may » truc may, phuc may
di cua » dai cua, doi cua, de cua
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 ((ky lang) or (ky tang)) xa hoi. ((hieu viec) or (trien viet)) cam luc may tinh di cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ((ky lang) OR (ky tang)) xa hoi. ((hieu viec) OR (trien viet)) cam luc may tinh di cua te.
• Adding a wildcard symbol may retrieve word variants: tu sach ((ky lang) or (ky tang)) xa hoi. ((hieu viec) or (trien viet)) cam luc may tinh di cua te*.