Perhaps you should try some spelling variations:
bach tuoc » sach duoc, sach nuoc
hieu hien » bieu hien, dieu hien, chieu chien
su sach » so sach, vu sach
hieu ve » hieu va, hieu van
va hanh » van hanh, va thanh, va danh
tuoc va » thuoc va, nuoc va, duoc va
cuu tre » cua tre, cau tren, cau treo
ty nang » ky nang, ty hang, ly nang
vi cuu » vi luu, vinh cuu

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sach ((ty nang) OR (ty xang)) xa hoi. ((hieu hien) or (hieu ve)) bach tuoc va hanh vi cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ((ty nang) OR (ty xang)) xa hoi. ((hieu hien) OR (hieu ve)) bach tuoc va hanh vi cuu tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ((ty nang) OR (ty xang)) xa hoi. ((hieu hien) or (hieu ve)) bach tuoc va hanh vi cuu tre*".