Perhaps you should try some spelling variations:
te sach » toc sach
hieu va » lieu va, hieu qua
hanh le » thanh le, hanh ve, hanh de
tuc ban » thuc ban, truc ban, tuc dan
lang ha » long ha
hieu ve » hieu van
y lang » o lang, _ lang, tay lang
tu ban » thu ban, te ban
ha hoi » hoa hoi, ha noi, xa hoi
le cua » ly cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach y lang ha hoi. ((hieu ve) OR (hieu va)) cham ((tuc ban) or (tu ban)) hanh le cua vat~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach y lang ha hoi. ((hieu ve) OR (hieu va)) cham ((tuc ban) OR (tu ban)) hanh le cua vat*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach y lang ha hoi. ((hieu ve) OR (hieu va)) cham ((tuc ban) or (tu ban)) hanh le cua vat*".