Perhaps you should try some spelling variations:
thanh tranh » thanh thanh, thanh tran, thanh trang
tranh cua » doanh cua, manh cua
hieu van » hieu va, thien van, hieu ve
va thanh » gia thanh, ban thanh, va tinh
vu sach » vu bach, su sach, vu khach
nang co » nang cao, nang doc, nang noi
cua tre » cua te, cuu tre, cua triet
nang o » nang ho, nang ro, nang x
xuc va » duc va, tuc va, luc va

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 y ((nang o) OR (nang co)) hoi. ((hieu van) or (lieu va)) bac xuc va thanh tranh cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach y ((nang o) OR (nang co)) hoi. ((hieu van) OR (lieu va)) bac xuc va thanh tranh cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu sach y ((nang o) OR (nang co)) hoi. ((hieu van) or (lieu va)) bac xuc va thanh tranh cua tre".
• Adding a wildcard symbol may retrieve word variants: vu sach y ((nang o) OR (nang co)) hoi. ((hieu van) or (lieu va)) bac xuc va thanh tranh cua tre*.