Perhaps you should try some spelling variations:
thanh van » thanh san, thanh toan, thanh phan
thanh vai » thanh hai, thanh tai, thanh oai
xach tay » canh tay
hieu van » hieu va, thien van, lieu va
van lam » van nam
lam qua » lam cua, nam qua, lam quang
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 y) or (xach tay)) nang xa hoi. hieu van lam qua quan ((thanh vai) OR (thanh van)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su ((sach y) OR (xach tay)) nang xa hoi. hieu van lam qua quan ((thanh vai) OR (thanh van)) cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su ((sach y) or (xach tay)) nang xa hoi. hieu van lam qua quan ((thanh vai) OR (thanh van)) cua tre".
• Adding a wildcard symbol may retrieve word variants: su ((sach y) or (xach tay)) nang xa hoi. hieu van lam qua quan ((thanh vai) OR (thanh van)) cua tre*.