Perhaps you should try some spelling variations:
quan hanh » quan thanh, quang thanh, quang khanh
tuan hanh » tuan anh, toan hanh, tran hanh
chat soc » cham soc, chat hoc, chat doc
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
va chat » van chat, va phat, cao chat
cuu tre » cau tren, cau treo
cua tre » cua te, cua triet, dua tren

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 ky nang xa hoi. lieu va chat soc ((tuan hanh) or (quan hanh)) vi ((cuu tre) or (cua tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky nang xa hoi. lieu va chat soc ((tuan hanh) OR (quan hanh)) vi ((cuu tre) OR (cua tre)).
• Adding a wildcard symbol may retrieve word variants: tu sach ky nang xa hoi. lieu va chat soc ((tuan hanh) or (quan hanh)) vi ((cuu tre) or (cua tre))*.