Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
nang xa » nang x, lang xa, nang ma
luc ban » duc ban, cuc ban, luc bat
hang vi » hang va, hanh vi, khang voi
hang di » hang doi, hang dien, hang dich
co luc » coc luc, co luy
cua te » cua tu
ky co » ky cho, ty co, ly co

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((thu hoach) or (thuat sach)) ky nang xa hoi. hieu ky co luc ban ((hang vi) OR (hang di)) cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thu hoach) OR (thuat sach)) ky nang xa hoi. hieu ky co luc ban ((hang vi) OR (hang di)) cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((thu hoach) or (thuat sach)) ky nang xa hoi. hieu ky co luc ban ((hang vi) OR (hang di)) cua te".
• Adding a wildcard symbol may retrieve word variants: ((thu hoach) or (thuat sach)) ky nang xa hoi. hieu ky co luc ban ((hang vi) OR (hang di)) cua te*.