Perhaps you should try some spelling variations:
phat duc » pham duc, phan duc, phan duoc
so sach » so sanh, bo sach, co sach
sach ty » sach y, sach tu, sach thu
ty nang » ky nang, ty xang, ty hang
nang ra » nang ma, lang ra, nang ro
va danh » va dan, va hanh, dia danh
va dinh » van dinh, va kinh, va tinh
ra hoi » ra khoi, xa hoi, va hoi
cua tu » cua tuc, cua su, cua cu

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

• If you are trying to use Boolean operators, they must be ALL CAPS: so sach ty nang ra hoi. lieu va phat duc ((va danh) OR (va dinh)) tai ((cua te) OR (cua tu))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sach ty nang ra hoi. lieu va phat duc ((va danh) or (va dinh)) tai ((cua te) OR (cua tu))~".
• Adding a wildcard symbol may retrieve word variants: so sach ty nang ra hoi. lieu va phat duc ((va danh) or (va dinh)) tai ((cua te) OR (cua tu))*.