Perhaps you should try some spelling variations:
thuat sach » thuat lanh
thuat san » thuat toan, thuat song, thuat lanh
van thanh » ban thanh, van tuan
thanh vi » hanh vi, thanh va, thanh ve
ty nang » ky nang, ty xang, ty hang
nang xa » nang x, lang xa, nang ma
duc van » duc va, duc tan, duc manh
vi cua » vai cua, di cua
va cam » va cham, va cao, va cai
cua cu » cua chu, cua cau, cua su

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