Perhaps you should try some spelling variations:
dang thai » dang hai, dang khai, lang thai
thuat san » thuat toan, thuat song, thuat lanh
dang thi » hoang thi, dang khoi
nang ma » tang ma, sang ma, nang cao
van hac » van hoc, van ha, van hai
san ky » sang ky, van ky, dan ky
ma hoi » mai hoi, xa hoi, ma hoa
cua te » 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: thuat san ky nang ma hoi. hieu ((cao chat) or (van hac)) nuoc va ((dang thai) OR (dang thi)) cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat san ky nang ma hoi. hieu ((cao chat) OR (van hac)) nuoc va ((dang thai) OR (dang thi)) cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuat san ky nang ma hoi. hieu ((cao chat) or (van hac)) nuoc va ((dang thai) OR (dang thi)) cua te".
• Adding a wildcard symbol may retrieve word variants: thuat san ky nang ma hoi. hieu ((cao chat) or (van hac)) nuoc va ((dang thai) OR (dang thi)) cua te*.