Perhaps you should try some spelling variations:
thanh van » thanh san, thanh toan, thanh phan
hieu van » hieu va, thien van, hieu ve
xa thanh » va thanh, ha thanh, ta thanh
nang tuc » nang thuc, nang luc, nang tu
sach dao » lanh dao
van cua » vang cua, ban cua, dan cua
su sach » so sach, vu sach
lang ha » long ha
nang xa » nang x, lang xa, nang ma
cua tre » cua te, cuu tre, cua triet

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