Perhaps you should try some spelling variations:
phuong thong » phuong trong, thong thong, phuong hoang
thien hach » thien thanh, hien hanh
thanh toan » thanh hoa, thanh san, tinh toan
hieu cach » hieu cac, chieu sach, hieu ca
hang hang » nang hang, cang thang, hung thang
va phuong » va thuong, cac phuong
manh toan » anh tuan, tinh toan

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) or (hieu cach)) - hang hang va phuong thong ((manh toan) or (thanh toan)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thien hach) OR (hieu cach)) - hang hang va phuong thong ((manh toan) OR (thanh toan)) cau.
• Adding a wildcard symbol may retrieve word variants: hoc ((thien hach) or (hieu cach)) - hang hang va phuong thong ((manh toan) or (thanh toan)) cau*.