Perhaps you should try some spelling variations:
hoc thieu » toc thieu, hoc hien
cach thuc » anh thuc, cac thu
thieu khi » thieu nhi, tien khi, hieu chi
cach toc » cac toc, cach hoc, cach thoi
chung co » chung cho, chung cu, chong co
khi cua » chi cua, thai cua
doi vi » doi vai, doi va, boi vi

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu ((cach toc) OR (cach thuc)) hoc thieu khi cua ets : chung co ((doi vi) or (doi voi)) đai~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((cach toc) OR (cach thuc)) hoc thieu khi cua ets : chung co ((doi vi) OR (doi voi)) đai.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((cach toc) OR (cach thuc)) hoc thieu khi cua ets : chung co ((doi vi) or (doi voi)) đai".
• Adding a wildcard symbol may retrieve word variants: tu ((cach toc) OR (cach thuc)) hoc thieu khi cua ets : chung co ((doi vi) or (doi voi)) đai*.