Perhaps you should try some spelling variations:
toc sach » hoc sach, doc sach, thuoc sach
nang tao » nang cao, sang tao, nang tai
va thanh » gia thanh, ban thanh, le thanh
sach ky » sac ky, sach y, sach ty
tao hoi » tao khoi, tao boi, tay hoi
hieu vi » hieu voi, hieu va, hieu ve
va tinh » may tinh
cua tu » cua tuc, cua su, cua cu
pham » phan

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

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