Perhaps you should try some spelling variations:
tru nang » tra nang, tri nang, truc nano
hieu van » hieu va, thien van, lieu va
van tuan » van quan, anh tuan
te sach » toc sach
tu nong » tu dong, tu cong, tu tong
nam xuc » cam xuc, nam xua, nam thuc
cau tre » cau tren, cau treo, cau tra
va cau » van cau, va cac, va dau

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach ((tu nong) or (tru nang)) xa hoi. hieu van nam xuc ((van tuan) OR (van ban)) va cau tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ((tu nong) OR (tru nang)) xa hoi. hieu van nam xuc ((van tuan) OR (van ban)) va cau tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ((tu nong) or (tru nang)) xa hoi. hieu van nam xuc ((van tuan) OR (van ban)) va cau tre".
• Adding a wildcard symbol may retrieve word variants: te sach ((tu nong) or (tru nang)) xa hoi. hieu van nam xuc ((van tuan) OR (van ban)) va cau tre*.