Perhaps you should try some spelling variations:
pham duy » pham duc
cua viet » ca viet, hoa viet, cua vat
hanh doi » thanh doi, hanh noi, hang doi
cham duc » pham duc, cham soc, phan duc
tu sach » thu sach, su sach, te sach
va hanh » van hanh, va thanh, va danh
su tien » su kien, su hien, tu tieng
sach ty » sach y, sach tu, sach thu
hieu ve » hieu va, hieu van
nang xa » nang x, lang xa, nang ma
ty nang » ky nang, ty xang, ty hang

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 ty nang xa hoi. hieu ve ((cham duc) or (pham duy)) va hanh doi ((cua viet) or (su tien))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ty nang xa hoi. hieu ve ((cham duc) OR (pham duy)) va hanh doi ((cua viet) OR (su tien)).
• Adding a wildcard symbol may retrieve word variants: tu sach ty nang xa hoi. hieu ve ((cham duc) or (pham duy)) va hanh doi ((cua viet) or (su tien))*.