Perhaps you should try some spelling variations:
dat khanh » van khanh, duy khanh
xa khanh » xa thanh, van khanh, hoa khanh
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
cao duc » dao duc, cao suc, giao duc
cao xuc » cam xuc, cao suc, chat xuc
nang xa » nang x, lang xa, nang ma
vi cua » vai cua, di 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 nang xa hoi. hieu qua ((cao xuc) or (cao duc)) ((xa khanh) OR (dat khanh)) vi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky nang xa hoi. hieu qua ((cao xuc) OR (cao duc)) ((xa khanh) OR (dat khanh)) vi cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ky nang xa hoi. hieu qua ((cao xuc) or (cao duc)) ((xa khanh) OR (dat khanh)) vi cua te".
• Adding a wildcard symbol may retrieve word variants: tu sach ky nang xa hoi. hieu qua ((cao xuc) or (cao duc)) ((xa khanh) OR (dat khanh)) vi cua te*.