Perhaps you should try some spelling variations:
chau tho » chat thom, cau thi, phu tho
chau tre » chay tren, cho tre, cau tra
hanh lai » hanh lam, hanh tai, thanh lap
tan hanh » tan thanh, tang hanh, toan hanh
hieu van » hieu va, thien van, lieu va
thu lang » thu hang, thu bang, phu lang
lang xa » lang ha, dang xay, lang van
van cau » van dau, van hau, van chat
cau duc » cao duc, cau luc, chu duc
te sach » toc sach
tu sach » thu sach, su sach, tu cach

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((tu sach) or (te sach)) thu lang xa hoi. hieu van cau duc tan hanh lai ((chau tre) OR (chau tho))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (te sach)) thu lang xa hoi. hieu van cau duc tan hanh lai ((chau tre) OR (chau tho)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) or (te sach)) thu lang xa hoi. hieu van cau duc tan hanh lai ((chau tre) OR (chau tho))".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (te sach)) thu lang xa hoi. hieu van cau duc tan hanh lai ((chau tre) OR (chau tho))*.