Perhaps you should try some spelling variations:
cua viet » ca viet, hoa viet, cua vat
cham loc » cham soc, chon loc, hau loc
tu sach » thu sach, su sach, te sach
va hanh » van hanh, va thanh, va danh
cuu tre » cua tre, cau tren, cau treo
nang ma » tang ma, sang ma, nang cao
y nang » ky nang, ly nang, v nang
cham o » cham soc
ma hoi » mai hoi, xa hoi, ma hoa

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. lieu va ((cham loc) OR (cham o)) va hanh vi ((cua viet) or (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach y nang ma hoi. lieu va ((cham loc) OR (cham o)) va hanh vi ((cua viet) OR (cuu tre)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach y nang ma hoi. lieu va ((cham loc) OR (cham o)) va hanh vi ((cua viet) or (cuu tre))".
• Adding a wildcard symbol may retrieve word variants: tu sach y nang ma hoi. lieu va ((cham loc) OR (cham o)) va hanh vi ((cua viet) or (cuu tre))*.