Perhaps you should try some spelling variations:
thanh toan » thanh hoa, thanh san, tinh toan
hoc sach » hoc cac, hoc anh
hieu van » hieu va, thien van, lieu va
nam thuc » nam thuoc, am thuc, nam thu
va thanh » gia thanh, ban thanh, va tinh
ky lang » ky nang, ky dang, ky tang
lang xa » lang ha, dang xay, lang van
thuc va » thuc vat, thuc dan, thuc day
cua tu » cua tuc, cua su, cua cu

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((hoc sach) or (hoc sinh)) ky lang xa hoi. hieu van nam thuc va thanh toan ((cua te) OR (cua tu))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc sach) OR (hoc sinh)) ky lang xa hoi. hieu van nam thuc va thanh toan ((cua te) OR (cua tu)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((hoc sach) or (hoc sinh)) ky lang xa hoi. hieu van nam thuc va thanh toan ((cua te) OR (cua tu))".
• Adding a wildcard symbol may retrieve word variants: ((hoc sach) or (hoc sinh)) ky lang xa hoi. hieu van nam thuc va thanh toan ((cua te) OR (cua tu))*.