Perhaps you should try some spelling variations:
hieu vien » hieu hien, hieu viec, thieu nien
thuy san » thuat san, thuy anh
thu san » thu ban, phu san, thuat san
da duoc » tao duoc, hoa duoc
hanh di » hanh vi, hanh de, hang di
va hanh » van hanh, va thanh, va danh
di cua » dai cua, doi cua, de cua
da duc » dao duc, do duc, ha duc
cua tu » cua tuc, cua su, cua cu
x hoi » xa hoi, o hoi, x ho

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

• If you are trying to use Boolean operators, they must be ALL CAPS: ((thu san) OR (thuy san)) ky nang x hoi. hieu vien ((da duc) OR (da duoc)) va hanh di cua tu~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((thu san) or (thuy san)) ky nang x hoi. hieu vien ((da duc) OR (da duoc)) va hanh di cua tu~".
• Adding a wildcard symbol may retrieve word variants: ((thu san) or (thuy san)) ky nang x hoi. hieu vien ((da duc) OR (da duoc)) va hanh di cua tu*.