Perhaps you should try some spelling variations:
hoc sach » hoc sinh, hoc cac, hoc anh
gian lan » gian lang, gian dan, giang van
sach ky » sac ky, sach y, sach ty
hieu va » lieu va, hieu qua
cac xuc » cam xuc, cac nuoc, chat xuc
va gian » va gianh, van gian, va giai
xuc va » duc va, tuc va, luc va
cua tu » cua tuc, cua su, cua cu
x hoi » xa hoi, o hoi, 5 hoi

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc sach ky nang ((x hoi) or (x ho)). hieu va cac xuc va gian lan ((cua te) or (cua tu))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc sach ky nang ((x hoi) OR (x ho)). hieu va cac xuc va gian lan ((cua te) OR (cua tu)).
• Adding a wildcard symbol may retrieve word variants: hoc sach ky nang ((x hoi) or (x ho)). hieu va cac xuc va gian lan ((cua te) or (cua tu))*.