Perhaps you should try some spelling variations:
phuong doan » phuong loan, phuong hoang, huong dan
manh khung » manh hung, manh tung, manh dung
phuong dan » phuong danh, huong dan, phuong lan
lieu tinh » trieu tinh, diep tinh, bien tinh
doc lieu » duoc lieu, doc hieu, du lieu
anh hung » anh huong, manh hung, anh dung
toan ban » van ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: doc lieu tinh - ((manh khung) OR (anh hung)) va nhung ((phuong dan) or (phuong doan)) toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc lieu tinh - ((manh khung) OR (anh hung)) va nhung ((phuong dan) OR (phuong doan)) toan ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doc lieu tinh - ((manh khung) OR (anh hung)) va nhung ((phuong dan) or (phuong doan)) toan ban".
• Adding a wildcard symbol may retrieve word variants: doc lieu tinh - ((manh khung) OR (anh hung)) va nhung ((phuong dan) or (phuong doan)) toan ban*.