Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
va thanh » gia thanh, ban thanh, va tinh
hieu ve » hieu va, hieu van
sach ty » sach y, sach tu, sach thu
va hanh » van hanh, va danh, ban hanh
nang xa » nang x, lang xa, nang ma
ty nang » ky nang, ty xang, ty hang
doi cua » dai cua, hoi cua
tu sach » thu sach, su sach, te sach

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