Perhaps you should try some spelling variations:
cua viet » ca viet, hoa viet, cua vat
ly nang » ky nang, ly hang, ly vang
cac loc » cac lop, cac toc, cac hoc
qua cac » cua cac
tu sach » thu sach, su sach, tu cach
te sach » toc sach
y nang » ky nang, v nang, may nang
loc va » hoc va, luc va
va dau » va dao
dau va » dau ve, lau va
va cua » va chua, via cua, ca 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) or (te sach)) ((y nang) or (ly nang)) xa hoi. hieu qua cac loc va dau va cua viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (te sach)) ((y nang) OR (ly nang)) xa hoi. hieu qua cac loc va dau va cua viet.
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (te sach)) ((y nang) or (ly nang)) xa hoi. hieu qua cac loc va dau va cua viet*.