Perhaps you should try some spelling variations:
thong cong » trong cong, tong cong, thong thong
chieu tinh » trieu tinh, lieu tinh, chau tinh
doi chieu » doc hieu, doi chi, ho chieu
tran van » luan van
cong tac » cong ty
phan cac » phan dau, phan lap, phan van
lan van » luan van, lang van, tan van

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi chieu tinh - hanh ((tran van) or (lan van)) thong cong tac ((phan cac) OR (nhan cach))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu tinh - hanh ((tran van) OR (lan van)) thong cong tac ((phan cac) OR (nhan cach)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chieu tinh - hanh ((tran van) or (lan van)) thong cong tac ((phan cac) OR (nhan cach))".
• Adding a wildcard symbol may retrieve word variants: doi chieu tinh - hanh ((tran van) or (lan van)) thong cong tac ((phan cac) OR (nhan cach))*.