Perhaps you should try some spelling variations:
thanh phan » thanh pho, thanh san, thanh toan
van thanh » ban thanh, van tuan
dau tren » dau tien, dat tren, dau tieng
hau treo » cau treo, cau theo, cau tren
hieu van » hieu va, thien van, lieu va
nam xuc » cam xuc, nam xua, nam thuc
xuc van » duc van, luc van, vuc van
ly nang » ky nang, ly hang, ly vang
te sach » toc sach
tu sach » thu sach, su sach, tu cach
x hoi » xa hoi, o hoi, x ho

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((tu sach) or (te sach)) ly nang x hoi. hieu van nam xuc van thanh phan ((hau treo) or (dau tren))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (te sach)) ly nang x hoi. hieu van nam xuc van thanh phan ((hau treo) OR (dau tren)).
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (te sach)) ly nang x hoi. hieu van nam xuc van thanh phan ((hau treo) or (dau tren))*.