Perhaps you should try some spelling variations:
tu sach » thu sach, su sach, te sach
hang vi » hang va, hanh vi, khang voi
hang di » hang doi, hang dien, hang dich
cam tuc » cam xuc, cam tu, nam thuc
hieu ve » hieu va, hieu van
cua tre » cua te, cuu tre, cua triet
nang ma » tang ma, sang ma, nang cao
so sach » so sanh, bo sach, co sach
ma hoi » mai hoi, xa hoi, ma hoa
tuc va » thuc va, truc va, tuc xa
ve cam » ve cham, ve cac, va cam

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