Perhaps you should try some spelling variations:
thuat sach » thuat lanh
thuat san » thuat toan, thuat song, thuat lanh
hieu ve » hieu va, hieu van
duc van » duc tan, duc manh, duc phan
hanh de » hanh ve, hanh kem
ve cao » va cao, ve bao, ve cac
de cua » le cua, te cua, dieu cua
cua te » cua tu
x hoi » xa hoi, o hoi, x ho

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((thuat sach) OR (thuat san)) ky nang x hoi. hieu ve cao ((duc van) or (duc va)) hanh de cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thuat sach) OR (thuat san)) ky nang x hoi. hieu ve cao ((duc van) OR (duc va)) hanh de cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((thuat sach) OR (thuat san)) ky nang x hoi. hieu ve cao ((duc van) or (duc va)) hanh de cua te".
• Adding a wildcard symbol may retrieve word variants: ((thuat sach) OR (thuat san)) ky nang x hoi. hieu ve cao ((duc van) or (duc va)) hanh de cua te*.