Perhaps you should try some spelling variations:
hanh vai » hanh vi, hanh va, hanh tai
tu sach » thu sach, su sach, te sach
vai cuu » vai cua
va hanh » van hanh, va thanh, va danh
cam tuc » cam xuc, cam tu, nam thuc
cuu tre » cua tre, cau tren, cau treo
hieu va » lieu va
hang xa » hoang xa, hang va, hang ca
ty hang » ly hang, ty xang, thi hang
so sach » so sanh, bo sach, co sach
tuc va » thuc va, truc va, tuc xa

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 (so sach)) ty hang xa hoi. ((hieu va) OR (hieu qua)) cam tuc va hanh vai cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (so sach)) ty hang xa hoi. ((hieu va) OR (hieu qua)) cam tuc va hanh vai cuu tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) or (so sach)) ty hang xa hoi. ((hieu va) OR (hieu qua)) cam tuc va hanh vai cuu tre".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (so sach)) ty hang xa hoi. ((hieu va) OR (hieu qua)) cam tuc va hanh vai cuu tre*.