Perhaps you should try some spelling variations:
hoc sach » hoc sinh, hoc cac, hoc anh
nang doi » nang doc, nang noi, hang doi
cham tuc » nham thuc, pham thuc, tham thuc
lang van » dang van, tang van, hoang van
vu sach » vu bach, su sach, vu khach
doi cua » dai cua, hoi cua
va nang » van nang, da nang, cam nang
ve cham » va cham, ve chat, vu cham
hieu ve » hieu va, hieu van
lang xa » lang ha, dang xay
cua tre » cua te, cuu tre, cua triet
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: ((vu sach) or (hoc sach)) ky ((lang xa) or (lang van)) hoi. hieu ve cham tuc va nang doi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((vu sach) OR (hoc sach)) ky ((lang xa) OR (lang van)) hoi. hieu ve cham tuc va nang doi cua tre.
• Adding a wildcard symbol may retrieve word variants: ((vu sach) or (hoc sach)) ky ((lang xa) or (lang van)) hoi. hieu ve cham tuc va nang doi cua tre*.