Perhaps you should try some spelling variations:
thien van » thi van
thanh vi » hanh vi, thanh va, thanh ve
xa thanh » va thanh, ha thanh, ta thanh
hac tuc » thac toc, thai tuc
su sach » so sach, vu sach
nang ma » tang ma, sang ma, nang cao
so sanh » do sanh
cua tre » cua te, cuu tre, cua triet
ma hoi » mai hoi, xa hoi, ma hoa
v nang » va nang, vu nang, van nang
vi cua » vai cua, di cua

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) or (so sanh)) v nang ma hoi. ((thien van) or (lieu va)) hac tuc xa thanh vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (so sanh)) v nang ma hoi. ((thien van) OR (lieu va)) hac tuc xa thanh vi cua tre.
• Adding a wildcard symbol may retrieve word variants: ((su sach) or (so sanh)) v nang ma hoi. ((thien van) or (lieu va)) hac tuc xa thanh vi cua tre*.