Perhaps you should try some spelling variations:
lieu tinh » trieu tinh, diep tinh, bien tinh
truong va » truong dai, truong cao, truong dao
dung cong » dung trong
hoc lieu » hoc dieu, hoc sieu, hoc tieu
trung ha » trung hoc, trung tam, trung cap
cong dan » cong san, cong tan, huong dan
toan cau » toan cao, toan ban, toan tai
toan tap » toan ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc lieu tinh - hanh ((truong va) or (trung ha)) dung cong dan ((toan cau) or (toan tap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc lieu tinh - hanh ((truong va) OR (trung ha)) dung cong dan ((toan cau) OR (toan tap)).
• Adding a wildcard symbol may retrieve word variants: hoc lieu tinh - hanh ((truong va) or (trung ha)) dung cong dan ((toan cau) or (toan tap))*.