Perhaps you should try some spelling variations:
thuat sach » thuat san
thuat lanh » thuat lap, thuat san
van thanh » ban thanh, van tuan
van hanh » ban hanh, van anh, van ban
nang xa » nang x, lang xa, nang ma
cac duc » cac du, cao duc, cac dac
v nang » va nang, vu nang, van nang
vi cua » vai cua, di cua
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: ((thuat sach) or (thuat lanh)) v nang xa hoi. lieu va cac duc ((van hanh) OR (van thanh)) vi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thuat sach) OR (thuat lanh)) v nang xa hoi. lieu va cac duc ((van hanh) OR (van thanh)) vi cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((thuat sach) or (thuat lanh)) v nang xa hoi. lieu va cac duc ((van hanh) OR (van thanh)) vi cua te".
• Adding a wildcard symbol may retrieve word variants: ((thuat sach) or (thuat lanh)) v nang xa hoi. lieu va cac duc ((van hanh) OR (van thanh)) vi cua te*.