Perhaps you should try some spelling variations:
nhanh hai » nhanh thai, thanh hai, nhanh ha
hoc hanh » hoc nhanh, hoc thanh, hoc anh
hanh hai » thanh hai, hang hai, hanh tai
nang van » dang van, tang van, lang van
van hoc » van hoa
hanh ky » hanh kem
va cao » va cac, va co, va dao
ve cao » ve bao, ve cac, ve co
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: hoc hanh ky nang van hoc. hieu ((ve cao) or (va cao)) duc va ((hanh hai) OR (nhanh hai)) cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hanh ky nang van hoc. hieu ((ve cao) OR (va cao)) duc va ((hanh hai) OR (nhanh hai)) cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc hanh ky nang van hoc. hieu ((ve cao) or (va cao)) duc va ((hanh hai) OR (nhanh hai)) cua te".
• Adding a wildcard symbol may retrieve word variants: hoc hanh ky nang van hoc. hieu ((ve cao) or (va cao)) duc va ((hanh hai) OR (nhanh hai)) cua te*.