Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
van chat » cao chat
hang tai » hang va, dung tai
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
van cau » van dau, van hau, toan cau
va hang » van hang, va nang, va lang
cua tre » cuu tre, cua triet, dua tren
luc va » duc va, tuc va, loc va
cua te » cua tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: thuat sach ky nang xa hoi. hieu ((van cau) or (van chat)) luc va hang tai ((cua tre) or (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat sach ky nang xa hoi. hieu ((van cau) OR (van chat)) luc va hang tai ((cua tre) OR (cua te)).
• Adding a wildcard symbol may retrieve word variants: thuat sach ky nang xa hoi. hieu ((van cau) or (van chat)) luc va hang tai ((cua tre) or (cua te))*.