Perhaps you should try some spelling variations:
toc sach » doc sach, thuoc sach, nuoc sach
chat xuc » chat huu, cam xuc, chao xu
van chat » cao chat
hieu van » hieu va, thien van, lieu va
hoc sach » hoc sinh, hoc cac, hoc anh
ty nang » ky nang, ty xang, ty hang
cao hoc » co hoc, cho hoc, chat hoc
van anh » van thanh, van minh
cua cau » cua cac, cua chu, cua cay
vi cua » vai cua, di cua
tuan » quan, tran, luan

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((toc sach) OR (hoc sach)) ty nang cao hoc. hieu van chat xuc ((van anh) or (tuan anh)) vi cua cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((toc sach) OR (hoc sach)) ty nang cao hoc. hieu van chat xuc ((van anh) OR (tuan anh)) vi cua cau*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((toc sach) OR (hoc sach)) ty nang cao hoc. hieu van chat xuc ((van anh) or (tuan anh)) vi cua cau*".