Perhaps you should try some spelling variations:
trung va » truong va, trang va, trung ha
hanh dai » hanh tai, hanh dao, vanh dai
cua viet » ca viet, hoa viet, cua vat
ly lang » ly hang, ly vang, le lang
lang xa » lang ha, dang xay, lang van
va hanh » van hanh, va thanh, va danh
va cam » va cham, va cao, va cai
toan » tran

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

• Performing a fuzzy search may retrieve terms with similar spellings: thuat toan ly lang xa hoi. hieu ((va cam) or (va cac)) trung va hanh dai cua viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat toan ly lang xa hoi. hieu ((va cam) OR (va cac)) trung va hanh dai cua viet.
• Adding a wildcard symbol may retrieve word variants: thuat toan ly lang xa hoi. hieu ((va cam) or (va cac)) trung va hanh dai cua viet*.