Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
thanh vai » thanh hai, thanh van, thanh tai
thien van » thi van
dua tren » dung tren
tu sach » thu sach, su sach, te sach
lam duc » lam duoc, pham duc, nam duoc
duc ban » duc tan, duc van, dua ban
hieu va » lieu va, hieu qua
nang xa » nang x, lang xa, nang ma
cuu tre » cua tre, cau tren, cau treo
sach 2 » sach y
2 nang » v nang

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 2 nang xa hoi. ((hieu va) or (thien van)) lam duc ban thanh vai ((dua tren) or (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach 2 nang xa hoi. ((hieu va) OR (thien van)) lam duc ban thanh vai ((dua tren) OR (cuu tre)).
• Adding a wildcard symbol may retrieve word variants: tu sach 2 nang xa hoi. ((hieu va) or (thien van)) lam duc ban thanh vai ((dua tren) or (cuu tre))*.