Perhaps you should try some spelling variations:
tang van » dang van, hoang van, trong van
thuc dan » thuc hanh, hoc dan, thuc vat
cua tre » cua te, cuu tre, cua triet
ky tang » ky nang, ky dang, kho tang
hieu ve » hieu va, hieu van
thuc va » thuc vat, thuc day
de cua » le cua, te cua, dieu cua
dan de » dan den, dang de, van de
vu hai » su hai, vu ha
vu dai » vi dai, va dai, su dai
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 hai) or (vu dai)) ky tang van hoa. hieu ve nam ((thuc va) or (thuc dan)) dan de cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((vu hai) OR (vu dai)) ky tang van hoa. hieu ve nam ((thuc va) OR (thuc dan)) dan de cua tre.
• Adding a wildcard symbol may retrieve word variants: ((vu hai) or (vu dai)) ky tang van hoa. hieu ve nam ((thuc va) or (thuc dan)) dan de cua tre*.