Perhaps you should try some spelling variations:
thanh toan » thanh hoa, thanh san, tinh toan
thien van » thi van
van thanh » ban thanh, van tuan
cua triet » cua viet, su triet, va triet
dang xay » dang van, van xay
su sach » so sach, vu sach
sach ky » sac ky, sach y, sach ty
ky dang » ky nang, ky danh
xay hoi » xa hoi, tay hoi, cay phoi
van lam » van nam
lam duc » lam duoc, pham duc, nam duoc
duc van » duc va, duc tan, duc manh
cua tre » cua te, cuu tre, dua tren

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sach ky dang xay hoi. thien van lam duc van thanh toan ((cua tre) or (cua triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ky dang xay hoi. thien van lam duc van thanh toan ((cua tre) OR (cua triet)).
• Adding a wildcard symbol may retrieve word variants: su sach ky dang xay hoi. thien van lam duc van thanh toan ((cua tre) or (cua triet))*.