Perhaps you should try some spelling variations:
thanh van » thanh san, thanh toan, thanh phan
sach phap » sach phat, sach nha, sach tham
cau tren » cu tren, dau tren, ca tren
nam duoc » nam thuoc, da duoc, dat duoc
hieu van » hieu va, thien van, lieu va
va thanh » gia thanh, ban thanh, va tinh
cuu tre » cua tre, cau treo
vu sach » vu bach, su sach, vu khach
lam duc » lam duoc, pham duc, lam dung
nang ma » tang ma, sang ma, nang cao
ma hoi » mai hoi, xa hoi, ma hoa

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu sach phap nang ma hoi. hieu van ((lam duc) or (nam duoc)) va thanh van ((cuu tre) OR (cau tren))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach phap nang ma hoi. hieu van ((lam duc) OR (nam duoc)) va thanh van ((cuu tre) OR (cau tren)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu sach phap nang ma hoi. hieu van ((lam duc) or (nam duoc)) va thanh van ((cuu tre) OR (cau tren))".
• Adding a wildcard symbol may retrieve word variants: vu sach phap nang ma hoi. hieu van ((lam duc) or (nam duoc)) va thanh van ((cuu tre) OR (cau tren))*.