Perhaps you should try some spelling variations:
phuong thong » phuong trong, thong thong, phuong hoang
luan phuong » lan phuong, quang phuong, doan phuong
thieu sach » chieu sach, thien hach, hieu cach
thong than » thong thanh, thong phan, thong nhan
manh cong » manh cuong, hanh cong, manh long
cong luan » tong luan, cong tuan, dong luan
than han » than phan, than ha, than man
hieu ca » hieu cac, hieu cua, hieu va
han tai » hang tai, nhan tai, van tai

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc ((thieu sach) or (hieu ca)) - manh cong luan phuong thong than han tai~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc ((thieu sach) OR (hieu ca)) - manh cong luan phuong thong than han tai.
• Adding a wildcard symbol may retrieve word variants: toc ((thieu sach) or (hieu ca)) - manh cong luan phuong thong than han tai*.