Perhaps you should try some spelling variations:
tu sach » thu sach, te sach, tu cach
hanh tu » anh tu, danh tu
va hanh » van hanh, va thanh, va danh
thuc va » thuc vat, thuc dan, thuc day
ve pham » v pham, ve phan, ve phat
ty nang » ky nang, ty xang, ty hang
su sach » so sach, vu sach
tu cua » hu cua, vu cua
cua te » cua tu
x hoi » xa hoi, o hoi, x ho

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) OR (su sach)) ty nang x hoi. hieu ((ve pham) or (vi pham)) thuc va hanh tu cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (su sach)) ty nang x hoi. hieu ((ve pham) OR (vi pham)) thuc va hanh tu cua te*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) OR (su sach)) ty nang x hoi. hieu ((ve pham) or (vi pham)) thuc va hanh tu cua te*".