Perhaps you should try some spelling variations:
cham duc » cham soc, pham duy, phan duc
te sach » toc sach
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
hieu ve » hieu va, hieu van
va tinh » may tinh
ve cua » le cua, te cua, ve cum
de cua » le cua, te cua, dieu cua

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: te sach ky nang xa hoi. hieu ve ((cham duc) OR (pham duc)) va tinh ((ve cua) or (de cua)) te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky nang xa hoi. hieu ve ((cham duc) OR (pham duc)) va tinh ((ve cua) OR (de cua)) te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky nang xa hoi. hieu ve ((cham duc) OR (pham duc)) va tinh ((ve cua) or (de cua)) te".
• Adding a wildcard symbol may retrieve word variants: te sach ky nang xa hoi. hieu ve ((cham duc) OR (pham duc)) va tinh ((ve cua) or (de cua)) te*.