Perhaps you should try some spelling variations:
danh hai » dang hai, lanh hai, manh hai
lang van » dang van, tang van, hoang van
su sach » so sach, vu sach
hai cua » thai cua, dai cua, hoi cua
va danh » va dinh, va dan, va hanh
cao luc » bao luc, cao duc, cao suc
hieu va » hieu qua
van hoi » van hoa, van hoc, van hoe
ky lang » ky nang, ky dang, ky tang
so sanh » do sanh
cua tre » cua te, cuu tre, cua triet
luc va » duc va, tuc va, loc va

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)) ky lang van hoi. ((hieu va) or (lieu va)) cao luc va danh hai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (so sanh)) ky lang van hoi. ((hieu va) OR (lieu va)) cao luc va danh hai cua tre.
• Adding a wildcard symbol may retrieve word variants: ((su sach) or (so sanh)) ky lang van hoi. ((hieu va) or (lieu va)) cao luc va danh hai cua tre*.