Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
va triet » va thiet, va trien, ve triet
cua tre » cua te, cuu tre, cua triet
hanh di » hanh vi, hanh de, hang di
va hanh » van hanh, va thanh, va danh
tu sach » thu sach, su sach, te sach
hieu ve » hieu va, hieu van
nang xa » nang x, lang xa, nang ma
cam tuc » cam xuc, cam tu, nam thuc
ve cam » ve cham, ve cac, va cam
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 (thuat sach)) ky nang xa hoi. hieu ve cam tuc va hanh di ((cua tre) or (va triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (thuat sach)) ky nang xa hoi. hieu ve cam tuc va hanh di ((cua tre) OR (va triet)).
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (thuat sach)) ky nang xa hoi. hieu ve cam tuc va hanh di ((cua tre) or (va triet))*.