Perhaps you should try some spelling variations:
hieu viec » nhieu viec, hieu ve, sieu viet
viec cam » viec lam, viec cua, viec va
va hanh » van hanh, va thanh, va danh
cam luc » cam xuc, cau luc
tu sach » thu sach, su sach, te sach
so lang » o lang, so dang, hoa lang
lo lang » o lang, le lang, hoa lang
luc va » duc va, tuc va, loc va
di cua » doi cua, de cua, do cua

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 ((lo lang) OR (so lang)) xa hoi. hieu viec cam luc va hanh ((di cua) or (dai cua)) te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ((lo lang) OR (so lang)) xa hoi. hieu viec cam luc va hanh ((di cua) OR (dai cua)) te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ((lo lang) OR (so lang)) xa hoi. hieu viec cam luc va hanh ((di cua) or (dai cua)) te".
• Adding a wildcard symbol may retrieve word variants: tu sach ((lo lang) OR (so lang)) xa hoi. hieu viec cam luc va hanh ((di cua) or (dai cua)) te*.