Perhaps you should try some spelling variations:
hieu viec » nhieu viec, hieu ve, sieu viet
thuat san » thuat toan, thuat song, thuat lanh
van hanh » van thanh, ban hanh, van anh
thuc van » thuc vat, thuc dan, thuc va
cac thuc » cach thuc, cac thu, can thuc
viec cac » vien cac, viec cua, viec lam
hanh di » hanh vi, hanh de, hang di
su sach » so sach, vu sach
lang xa » lang ha, dang xay, lang van
nang xa » nang x, nang ma, mang xa
cua tre » cua te, cuu tre, cua triet
di cua » dai cua, doi cua, de cua

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) or (thuat san)) ky ((nang xa) or (lang xa)) hoi. hieu viec cac thuc van hanh di cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (thuat san)) ky ((nang xa) OR (lang xa)) hoi. hieu viec cac thuc van hanh di cua tre.
• Adding a wildcard symbol may retrieve word variants: ((su sach) or (thuat san)) ky ((nang xa) or (lang xa)) hoi. hieu viec cac thuc van hanh di cua tre*.