Perhaps you should try some spelling variations:
cau thuc » cau truc, cuu thuc, can thuc
hieu van » hieu va, thien van, lieu va
dinh cuu » dinh chi
va tinh » may tinh
thuc va » thuc vat, thuc dan, thuc day
van cau » van dau, van hau, van chat
nang xa » nang x, lang xa, nang ma
va sac » va cac, va suc, va san
di cau » da cau, diem cau
vu sac » vu sach, vu san, vu cac

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((vu sac) OR (va sac)) ky nang xa hoi. hieu van cau thuc va tinh ((dinh cuu) or (di cau)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((vu sac) OR (va sac)) ky nang xa hoi. hieu van cau thuc va tinh ((dinh cuu) OR (di cau)) tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((vu sac) OR (va sac)) ky nang xa hoi. hieu van cau thuc va tinh ((dinh cuu) or (di cau)) tre*".