Perhaps you should try some spelling variations:
hieu van » thien van, lieu va, hieu ve
thanh vi » hanh vi, thanh va, thanh ve
cau treo » cau theo, cau tren, cau triet
dau tren » dau tien, dat tren, dau tieng
te sach » toc sach
hieu va » lieu va, hieu qua
xuc gia » duc gia, luc gia, tuc gia
y nang » ky nang, ly nang, v nang
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: te sach y nang x hoi. ((hieu van) OR (hieu va)) cam xuc gia thanh vi ((cau treo) or (dau tren))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach y nang x hoi. ((hieu van) OR (hieu va)) cam xuc gia thanh vi ((cau treo) OR (dau tren)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach y nang x hoi. ((hieu van) OR (hieu va)) cam xuc gia thanh vi ((cau treo) or (dau tren))".
• Adding a wildcard symbol may retrieve word variants: te sach y nang x hoi. ((hieu van) OR (hieu va)) cam xuc gia thanh vi ((cau treo) or (dau tren))*.