Perhaps you should try some spelling variations:
thong cong » trong cong, tong cong, thong thong
hieu manh » chieu xanh, hieu nganh, dieu hanh
cong tinh » cong trinh, cong vinh, long tinh
hoc hieu » hoc thieu, hoc hien, doc hieu
trung va » truong va, trang va, trung ha
tran van » luan van
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 hieu manh - thanh ((trung va) or (tran van)) thong cong tinh toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hieu manh - thanh ((trung va) OR (tran van)) thong cong tinh toan cao.
• Adding a wildcard symbol may retrieve word variants: hoc hieu manh - thanh ((trung va) or (tran van)) thong cong tinh toan cao*.