Perhaps you should try some spelling variations:
dinh lai » dinh lam, dinh lap, dinh tai
chau tre » chay tren, chau tho, cho tre
lang xa » lang ha, dang xay, lang van
hieu ve » hieu van
hieu va » lieu va, hieu qua
coc tuc » coc luc, hoc thuc, doc thuc
va dinh » van dinh, va kinh, va tinh
san ky » sang ky, dan ky, ban ky
tuc va » thuc va, truc va, tuc xa

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

• Performing a fuzzy search may retrieve terms with similar spellings: thuat ((san ky) OR (van ky)) lang xa hoi. ((hieu ve) or (hieu va)) coc tuc va dinh lai chau tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat ((san ky) OR (van ky)) lang xa hoi. ((hieu ve) OR (hieu va)) coc tuc va dinh lai chau tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuat ((san ky) OR (van ky)) lang xa hoi. ((hieu ve) or (hieu va)) coc tuc va dinh lai chau tre".
• Adding a wildcard symbol may retrieve word variants: thuat ((san ky) OR (van ky)) lang xa hoi. ((hieu ve) or (hieu va)) coc tuc va dinh lai chau tre*.