Perhaps you should try some spelling variations:
phuong manh » phuong anh, phung manh, phuong danh
dong phuong » duong phuong, dung phuong, dong huong
thieu sach » chieu sach, theo sach, thieu cac
thien hach » thien thanh, hien hanh
hieu cach » hieu cac, chieu sach, hieu ca
hanh tran » hanh trang, thanh tran, hanh tram
manh toan » thanh toan, anh tuan, tinh toan
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 ((((thieu sach) OR (hieu cach))) or (thien hach)) - hanh tran van dong phuong manh toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((((thieu sach) OR (hieu cach))) OR (thien hach)) - hanh tran van dong phuong manh toan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((((thieu sach) OR (hieu cach))) or (thien hach)) - hanh tran van dong phuong manh toan cao".
• Adding a wildcard symbol may retrieve word variants: hoc ((((thieu sach) OR (hieu cach))) or (thien hach)) - hanh tran van dong phuong manh toan cao*.