Perhaps you should try some spelling variations:
thanh van » thanh san, thanh toan, thanh phan
van nang » van quang, van ban, van dong
nang tuc » nang thuc, nang luc, nang tu
xa thanh » va thanh, ha thanh, ta thanh
hieu van » hieu va, thien van, lieu va
cua tre » cua te, cua triet, dua tren
so lanh » so sanh, so danh, so lang
long ha » dong ha, cong ha, dong hoa
nang xa » nang x, lang xa, nang ma
cuu tre » cau tren, cau treo

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

• Performing a fuzzy search may retrieve terms with similar spellings: so lanh dao ((nang xa) or (long ha)) hoi. hieu van nang tuc xa thanh van ((cua tre) OR (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so lanh dao ((nang xa) OR (long ha)) hoi. hieu van nang tuc xa thanh van ((cua tre) OR (cuu tre)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "so lanh dao ((nang xa) or (long ha)) hoi. hieu van nang tuc xa thanh van ((cua tre) OR (cuu tre))".
• Adding a wildcard symbol may retrieve word variants: so lanh dao ((nang xa) or (long ha)) hoi. hieu van nang tuc xa thanh van ((cua tre) OR (cuu tre))*.