Perhaps you should try some spelling variations:
doc sach » toc sach, nuoc sach, dac sac
ban hanh » ban hang
hoc sach » hoc sinh, hoc cac, hoc anh
van hanh » van thanh, van anh, van ban
chat xuc » chat huu, cam xuc, chao xu
va chat » van chat, va phat, cao chat
hieu va » lieu va, hieu qua
nang xa » nang x, lang xa, nang ma
ty nang » ky nang, ty xang, ty hang
vi cua » vai cua, di cua
cua cu » cua chu, cua cau, cua su

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((doc sach) or (hoc sach)) ty nang xa hoi. hieu va chat xuc ((van hanh) or (ban hanh)) vi cua cu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doc sach) OR (hoc sach)) ty nang xa hoi. hieu va chat xuc ((van hanh) OR (ban hanh)) vi cua cu.
• Adding a wildcard symbol may retrieve word variants: ((doc sach) or (hoc sach)) ty nang xa hoi. hieu va chat xuc ((van hanh) or (ban hanh)) vi cua cu*.