Perhaps you should try some spelling variations:
thien hach » thien thanh, hien hanh
hoc thien » hoc hien, hoc thieu, hoc thiet
cua thong » cua thuong, cua tong, suat thong
cua khong » hua khong, cua phuong, cua thuong
cong luan » tong luan, cong tuan, dong luan
hanh ban » thanh ban, hang ban, hanh han
hanh san » thanh san, khach san, thanh son

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc thien hach - ((hanh ban) or (hanh san)) ((cua thong) or (cua khong)) cong luan van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thien hach - ((hanh ban) OR (hanh san)) ((cua thong) OR (cua khong)) cong luan van ban.
• Adding a wildcard symbol may retrieve word variants: hoc thien hach - ((hanh ban) or (hanh san)) ((cua thong) or (cua khong)) cong luan van ban*.