Perhaps you should try some spelling variations:
truc ban » thuc ban, truc dan, truc van
ban hanh » ban hang
sanh ly » sinh ly, doanh ly, khanh ly
ly nang » ky nang, ly hang, ly vang
cao hoi » cau hoi, co hoi, cao hoc
ve cham » va cham, ve chat, vu cham
ca viet » va viet, co viet, hoa viet
ve cam » ve cac, va cam, ve cai
vi ca » vit ca, li ca, va ca

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

• Performing a fuzzy search may retrieve terms with similar spellings: do sanh ly nang cao hoi. hieu ((ve cam) or (ve cham)) truc ban hanh vi ca viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: do sanh ly nang cao hoi. hieu ((ve cam) OR (ve cham)) truc ban hanh vi ca viet.
• Adding a wildcard symbol may retrieve word variants: do sanh ly nang cao hoi. hieu ((ve cam) or (ve cham)) truc ban hanh vi ca viet*.