Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
cua tre » cua te, cuu tre, cua triet
danh co » danh cho, doanh co, anh co
va danh » va dinh, va dan, va hanh
cao suc » cao su
cao duc » dao duc, giao duc, tao duoc
sac ky » sai ky
co cua » con cua, ca cua, cong cua
x hoi » xa hoi, o hoi, x ho

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu ((sac ky) or (cac ky)) nang x hoi. hieu van ((cao duc) or (cao suc)) va danh co cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sac ky) OR (cac ky)) nang x hoi. hieu van ((cao duc) OR (cao suc)) va danh co cua tre.
• Adding a wildcard symbol may retrieve word variants: tu ((sac ky) or (cac ky)) nang x hoi. hieu van ((cao duc) or (cao suc)) va danh co cua tre*.