Perhaps you should try some spelling variations:
hieu vien » hieu hien, hieu viec, thieu nien
thuy san » thuat san, thuy anh
thu ban » thu hang
va hanh » van hanh, va thanh, ban hanh
va danh » va dinh, va dan, dia danh
vien da » vien dai, hien dai
cao hoi » cau hoi, co hoi, cao hoc
da duc » dao duc, da duoc, do duc
di cua » dai cua, doi cua, de cua
cua su » qua su

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((thu ban) or (thuy san)) ky nang cao hoi. hieu vien da duc ((va danh) OR (va hanh)) di cua su~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thu ban) OR (thuy san)) ky nang cao hoi. hieu vien da duc ((va danh) OR (va hanh)) di cua su*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((thu ban) or (thuy san)) ky nang cao hoi. hieu vien da duc ((va danh) OR (va hanh)) di cua su*".