Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
thanh hoa » thanh pho
hanh hai » thanh hai, nhanh hai, hang hai
te sach » toc sach
nang ma » tang ma, sang ma, nang cao
y nang » ky nang, ly nang, v nang
ve cao » va cao, ve bao, ve co
ma hoi » mai hoi, xa hoi, ma hoa
ve cac » va cac, vien cac

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach y nang ma hoi. hieu ((ve cao) OR (ve cac)) duc va ((hanh hai) or (thanh hoa)) cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach y nang ma hoi. hieu ((ve cao) OR (ve cac)) duc va ((hanh hai) OR (thanh hoa)) cua triet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach y nang ma hoi. hieu ((ve cao) OR (ve cac)) duc va ((hanh hai) or (thanh hoa)) cua triet*".