Perhaps you should try some spelling variations:
lang van » dang van, tang van, hoang van
tu sach » thu sach, te sach, tu cach
thuc va » thuc vat, thuc dan, thuc day
phuc va » phuc vu, chuc va, thuc vat
qua cau » quan cau, qua cac, qua ca
van hoc » van hoa
su sach » so sach, vu sach
y lang » o lang, _ lang, tay lang
vi cua » vai cua, di cua
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) or (su sach)) y lang van hoc. hieu qua cau ((phuc va) OR (thuc va)) hanh vi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (su sach)) y lang van hoc. hieu qua cau ((phuc va) OR (thuc va)) hanh vi cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) or (su sach)) y lang van hoc. hieu qua cau ((phuc va) OR (thuc va)) hanh vi cua te".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (su sach)) y lang van hoc. hieu qua cau ((phuc va) OR (thuc va)) hanh vi cua te*.