Perhaps you should try some spelling variations:
van thanh » ban thanh, van tuan
thu sach » thuat sach, thuoc sach, thu hoach
thai cua » than cua, tai cuc, tri cua
cac xuc » cam xuc, cac nuoc, chat xuc
vai cua » dai cua, hai cua, lai cua
xuc van » duc van, luc van, vuc van
hieu va » lieu va, hieu qua
nong xa » song xa, dong xa, nong va
tu nong » tu dong, tu cong, tu tong
tu sach » su sach, te sach, tu cach

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((thu sach) or (tu sach)) tu nong xa hoi. hieu va cac xuc van thanh ((vai cua) or (thai cua)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thu sach) OR (tu sach)) tu nong xa hoi. hieu va cac xuc van thanh ((vai cua) OR (thai cua)) tre.
• Adding a wildcard symbol may retrieve word variants: ((thu sach) or (tu sach)) tu nong xa hoi. hieu va cac xuc van thanh ((vai cua) or (thai cua)) tre*.