Perhaps you should try some spelling variations:
lang van » dang van, tang van, hoang van
tu sach » thu sach, su sach, te sach
thuc va » thuc vat, thuc dan, thuc day
danh vi » hanh vi, dinh vi, danh di
cua tuc » cua duc, cua tu, cua thuoc
phuc va » phuc vu, chuc va, thuc vat
qua cau » quan cau, qua cac, qua ca
van hoc » van hoa
y lang » o lang, _ lang, tay lang
cua te » cua tu

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 y lang van hoc. hieu qua cau ((phuc va) OR (thuc va)) danh vi ((cua te) or (cua tuc))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach y lang van hoc. hieu qua cau ((phuc va) OR (thuc va)) danh vi ((cua te) OR (cua tuc)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach y lang van hoc. hieu qua cau ((phuc va) OR (thuc va)) danh vi ((cua te) or (cua tuc))".
• Adding a wildcard symbol may retrieve word variants: tu sach y lang van hoc. hieu qua cau ((phuc va) OR (thuc va)) danh vi ((cua te) or (cua tuc))*.