Perhaps you should try some spelling variations:
thuoc sach » nuoc sach, thuat sach, thuoc sinh
van thanh » ban thanh, van tuan
hoc sach » hoc sinh, hoc cac, hoc anh
thanh di » thanh doi, thanh de, thanh do
xuc van » duc van, luc van, vuc van
cac xuc » cam xuc, cac nuoc, chat xuc
hieu va » lieu va, hieu qua
nang ma » tang ma, nang cao, mang may
sang ma » tang ma, sang tao, mang may
di cua » dai cua, doi cua, de 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: ((hoc sach) or (thuoc sach)) ty ((sang ma) or (nang ma)) hoi. hieu va cac xuc van thanh di cua cu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc sach) OR (thuoc sach)) ty ((sang ma) OR (nang ma)) hoi. hieu va cac xuc van thanh di cua cu.
• Adding a wildcard symbol may retrieve word variants: ((hoc sach) or (thuoc sach)) ty ((sang ma) or (nang ma)) hoi. hieu va cac xuc van thanh di cua cu*.