Perhaps you should try some spelling variations:
tham thuc » nham thuc, pham thuc, tam thuc
thanh va » thanh van, hanh va, thanh ha
thanh vi » hanh vi, thanh ve, nhanh vi
thuc va » thuc vat, thuc dan, thuc day
vu sach » vu bach, su sach, vu khach
ve tham » va tham, ve cham, vi tham
hieu ve » hieu va, hieu van
nang xa » nang x, lang xa, nang ma
hoc cac » hoc cao
cua tre » cua te, cuu tre, cua triet

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((vu sach) or (hoc cac)) ky nang xa hoi. hieu ve tham thuc va ((thanh vi) OR (thanh va)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((vu sach) OR (hoc cac)) ky nang xa hoi. hieu ve tham thuc va ((thanh vi) OR (thanh va)) cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((vu sach) or (hoc cac)) ky nang xa hoi. hieu ve tham thuc va ((thanh vi) OR (thanh va)) cua tre".
• Adding a wildcard symbol may retrieve word variants: ((vu sach) or (hoc cac)) ky nang xa hoi. hieu ve tham thuc va ((thanh vi) OR (thanh va)) cua tre*.