Perhaps you should try some spelling variations:
hanh dao » lanh dao, thanh dat, thanh dam
vanh dai » van dai, vanh tai, lanh dao
hieu van » hieu va, thien van, lieu va
su sach » so sach, vu sach
cua tuc » cua duc, cua tu, cua thuoc
lang ha » long ha
ky lang » ky nang, ky dang, ky tang
vu khac » vu kham, vu khanh, bui khac
ha hoi » hoa hoi, ha noi, xa hoi
lo van » le van, vo van, so van
nam lo » nam bo, nam so, nam co

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 (vu khac)) ky lang ha hoi. hieu van nam lo van ((vanh dai) or (hanh dao)) cua tuc~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (vu khac)) ky lang ha hoi. hieu van nam lo van ((vanh dai) OR (hanh dao)) cua tuc.
• Adding a wildcard symbol may retrieve word variants: ((su sach) or (vu khac)) ky lang ha hoi. hieu van nam lo van ((vanh dai) or (hanh dao)) cua tuc*.