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

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 ve ((cham duc) or (pham duy)) va tinh ((ve cua) OR (le cua)) te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky nang xa hoi. hieu ve ((cham duc) OR (pham duy)) va tinh ((ve cua) OR (le cua)) te*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ky nang xa hoi. hieu ve ((cham duc) or (pham duy)) va tinh ((ve cua) OR (le cua)) te*".