Perhaps you should try some spelling variations:
thu phuong » thi phuong, thu huong, theo phuong
thanh tung » thanh cong
phuong dan » phuong danh, phuong doan, huong dan
hoc thiet » hoc thieu, hoc thuyet, hoc hien
thiet anh » thien anh, thuyet anh, thien danh
than cao » toan cao, thai cao, than cap
khan cap » khan ap, than cap, khoan cam
cua thu » cua chu, ca thu, cua tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc thiet anh - ((canh tranh) or (thanh tung)) cua thu phuong dan ((than cao) or (khan cap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thiet anh - ((canh tranh) OR (thanh tung)) cua thu phuong dan ((than cao) OR (khan cap)).
• Adding a wildcard symbol may retrieve word variants: hoc thiet anh - ((canh tranh) or (thanh tung)) cua thu phuong dan ((than cao) or (khan cap))*.