Perhaps you should try some spelling variations:
pham thuc » phap thuc, pham chuc, nham thuc
thanh dam » thanh dat, thanh nam, thanh tam
doanh dao » doanh bao, doanh cao, doanh giao
nang cai » nang cao, nang tai, nang cap
hieu van » hieu va, thien van, lieu va
su sach » so sach, vu sach
thuc va » thuc vat, thuc dan, thuc day
hieu ve » hieu va
cai hoi » cau hoi, dai hoi, cai hoa
y nang » ky nang, ly nang, v nang
cua tu » cua tuc, cua su, cua cu

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sach y nang cai hoi. ((hieu ve) or (hieu van)) pham thuc va ((doanh dao) or (thanh dam)) cua tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach y nang cai hoi. ((hieu ve) OR (hieu van)) pham thuc va ((doanh dao) OR (thanh dam)) cua tu.
• Adding a wildcard symbol may retrieve word variants: su sach y nang cai hoi. ((hieu ve) or (hieu van)) pham thuc va ((doanh dao) or (thanh dam)) cua tu*.