Perhaps you should try some spelling variations:
thieu tinh » trieu tinh, chieu tinh, thien tinh
hoc thieu » toc thieu, hoc hien
trung pha » trung phan, trung phat, trung ha
trung hoc » trung quoc
dung cong » dung trong
cong san » cong tac
toan cao » toan ban, toan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc thieu tinh - thanh ((trung pha) or (trung hoc)) dung cong san ((toan cao) or (van ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu tinh - thanh ((trung pha) OR (trung hoc)) dung cong san ((toan cao) OR (van ban)).
• Adding a wildcard symbol may retrieve word variants: hoc thieu tinh - thanh ((trung pha) or (trung hoc)) dung cong san ((toan cao) or (van ban))*.