Perhaps you should try some spelling variations:
thanh toan » thanh hoa, thanh san, tinh toan
cua triet » cua viet, su triet, va triet
ban thanh » ban hanh, ban hang
toan cua » than cua, tan cua, doanh cua
vu khach » vu khanh, vu khac, vay khach
hieu van » hieu va, thien van, lieu va
cam tuc » cam xuc, nam thuc, dam thuc
su sach » so sach, vu sach
ly nang » ky nang, ly hang, ly vang
nang xa » nang x, lang xa, nang ma
cam tu » cam thu, nam tu, dam tu

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

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