Perhaps you should try some spelling variations:
cua viet » ca viet, hoa viet, cua vat
thu sach » thuat sach, thuoc sach, thu hoach
danh vai » danh sai, danh va, doanh van
cham duc » pham duc, cham soc, pham duy
hieu ve » hieu va, hieu van
vai cua » dai cua, hai cua, lai cua
va danh » va dinh, va dan, va hanh
tu sach » su sach, te sach, tu cach
hieu vu » hieu va, hieu su, dieu vu
nang xa » nang x, lang xa, nang ma
ha nang » kha nang, hoa nang, da nang

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) or (thu sach)) ha nang xa hoi. ((hieu vu) OR (hieu ve)) cham duc va danh vai cua viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (thu sach)) ha nang xa hoi. ((hieu vu) OR (hieu ve)) cham duc va danh vai cua viet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) or (thu sach)) ha nang xa hoi. ((hieu vu) OR (hieu ve)) cham duc va danh vai cua viet".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (thu sach)) ha nang xa hoi. ((hieu vu) OR (hieu ve)) cham duc va danh vai cua viet*.