Perhaps you should try some spelling variations:
vien canh » bien canh, vien can, vien nganh
canh thuc » anh thuc, cach thuc, danh thuc
hieu vien » hieu hien, hieu viec, thieu nien
nang xay » dang xay, nganh xay, nang xuan
va trinh » van trinh, va tinh, lap trinh
van phu » san phu, van phung, van phan
van chu » van chi, van cau, van cho
thuc va » thuc vat, thuc dan, thuc day
tu sach » thu sach, te sach, tu cach
xay hoi » xa hoi, tay hoi, cay phoi
su sach » so sach, vu sach

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((tu sach) or (su sach)) ky nang xay hoi. hieu vien canh thuc va trinh ((van chu) OR (van phu)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (su sach)) ky nang xay hoi. hieu vien canh thuc va trinh ((van chu) OR (van phu)) tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) or (su sach)) ky nang xay hoi. hieu vien canh thuc va trinh ((van chu) OR (van phu)) tre".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (su sach)) ky nang xay hoi. hieu vien canh thuc va trinh ((van chu) OR (van phu)) tre*.