Perhaps you should try some spelling variations:
nang thuc » dang thuoc, nhanh thuc, trang thuc
thanh van » thanh san, thanh toan, thanh phan
nang tuc » nang luc, nang tu, nang phuc
xa thanh » va thanh, ha thanh, ta thanh
hieu van » hieu va, thien van, lieu va
van cua » vang cua, ban cua, dan cua
so lanh » so sanh, so danh, so lang
nang xa » nang x, lang xa, nang ma
lang ha » long ha
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: so lanh dao ((nang xa) or (lang ha)) hoi. hieu van ((nang tuc) OR (nang thuc)) xa thanh van cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so lanh dao ((nang xa) OR (lang ha)) hoi. hieu van ((nang tuc) OR (nang thuc)) xa thanh van cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so lanh dao ((nang xa) or (lang ha)) hoi. hieu van ((nang tuc) OR (nang thuc)) xa thanh van cua tre".
• Adding a wildcard symbol may retrieve word variants: so lanh dao ((nang xa) or (lang ha)) hoi. hieu van ((nang tuc) OR (nang thuc)) xa thanh van cua tre*.