Perhaps you should try some spelling variations:
tieu tinh » trieu tinh, tieu trinh, lieu tinh
dung cong » dung trong
hoc tieu » hoc thieu, hoc dieu, hoc sieu
cong tan » cong tac, cong san, cong thanh
tran van » luan van
han qua » hanh qua, han cua, phan quan
hai qua » hai quan, hai cua, hoi qua

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc tieu tinh - hanh ((han qua) or (hai qua)) dung cong tan tran van~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc tieu tinh - hanh ((han qua) OR (hai qua)) dung cong tan tran van.
• Adding a wildcard symbol may retrieve word variants: hoc tieu tinh - hanh ((han qua) or (hai qua)) dung cong tan tran van*.