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 va » lieu va, hieu qua
va hanh » van hanh, va thanh, va danh
tuoc va » thuoc va, nuoc va, duoc va
hieu ve » hieu van
sach ty » sach y, sach tu, sach thu
nang xa » nang x, lang xa, nang ma
ty nang » ky nang, ty xang, ty hang
cuu tre » cua tre, cau tren, cau treo
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 xa hoi. ((hieu hien) or (((hieu ve) OR (hieu va)))) bach tuoc va hanh vi cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ty nang xa hoi. ((hieu hien) OR (((hieu ve) OR (hieu va)))) bach tuoc va hanh vi cuu tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ty nang xa hoi. ((hieu hien) or (((hieu ve) OR (hieu va)))) bach tuoc va hanh vi cuu tre*".