Perhaps you should try some spelling variations:
dat thanh » dao thanh, dat khanh, dang thanh
nam thuc » nam thuoc, am thuc, nam thu
hoc sach » hoc sinh, hoc cac, hoc anh
thuc dat » thuc vat, thuc dan, thuc day
vu sach » vu bach, su sach, vu khach
lai cua » dai cua, hai cua, lai chau
hieu ve » hieu va, hieu van
nang xa » nang x, lang xa, nang ma
vi cua » vai cua, di cua
ve nam » he nam, va nam, le nam

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((vu sach) or (hoc sach)) ky nang xa hoi. hieu ve nam thuc dat thanh ((vi cua) or (lai cua)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((vu sach) OR (hoc sach)) ky nang xa hoi. hieu ve nam thuc dat thanh ((vi cua) OR (lai cua)) tre.
• Adding a wildcard symbol may retrieve word variants: ((vu sach) or (hoc sach)) ky nang xa hoi. hieu ve nam thuc dat thanh ((vi cua) or (lai cua)) tre*.