Perhaps you should try some spelling variations:
thuat sach » thuat lanh
manh thanh » danh thanh, minh thanh, manh thang
thuat san » thuat toan, thuat song, thuat lanh
thanh vi » hanh vi, thanh va, thanh ve
duc manh » suc manh, duc anh, duc minh
ly nang » ky nang, ly hang, ly vang
nang xa » nang x, lang xa, nang ma
vi cua » vai cua, di cua
cua te » cua tu
va cao » va cac, va co, va dao
va cam » va cham, va cac, va cai

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)) ly nang xa hoi. lieu ((va cam) OR (va cao)) duc manh thanh vi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thuat sach) OR (thuat san)) ly nang xa hoi. lieu ((va cam) OR (va cao)) duc manh thanh vi cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((thuat sach) or (thuat san)) ly nang xa hoi. lieu ((va cam) OR (va cao)) duc manh thanh vi cua te".
• Adding a wildcard symbol may retrieve word variants: ((thuat sach) or (thuat san)) ly nang xa hoi. lieu ((va cam) OR (va cao)) duc manh thanh vi cua te*.