Perhaps you should try some spelling variations:
thanh toan » thanh hoa, thanh san, tinh toan
cao triet » cau triet, mao triet, cao viet
hieu van » hieu va, thien van, lieu va
toan cao » toan ban, toan tap
hoang xa » hoang ha, hoang va, hoang xuan
cach tu » cach thuc
tu cach » tu cac
hang xa » hang va, hang ca, lang xa
van cam » van nam, van lam, van cau
xuc va » duc va, luc va, xac va
tuc va » thuc va, truc va, tuc xa

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu cach tu ((hang xa) or (hoang xa)) hoi. hieu van cam ((xuc va) OR (tuc va)) thanh toan cao triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu cach tu ((hang xa) OR (hoang xa)) hoi. hieu van cam ((xuc va) OR (tuc va)) thanh toan cao triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu cach tu ((hang xa) or (hoang xa)) hoi. hieu van cam ((xuc va) OR (tuc va)) thanh toan cao triet".
• Adding a wildcard symbol may retrieve word variants: tu cach tu ((hang xa) or (hoang xa)) hoi. hieu van cam ((xuc va) OR (tuc va)) thanh toan cao triet*.