Perhaps you should try some spelling variations:
thuat lap » thuat lanh, thuat xay, thuat bai
hieu van » hieu va, thien van, lieu va
tu sach » thu sach, su sach, te sach
nang xa » nang x, lang xa, nang ma
van cau » van dau, van hau, van chat
cau duc » cao duc, cau luc, chu duc
va tinh » may tinh
de cua » le cua, dieu cua
te cua » tue cua, le cua

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

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