Perhaps you should try some spelling variations:
hanh tai » thanh tai, hang tai, han tai
ve triet » va trien, su triet
su sach » so sach, vu sach
xa hanh » xa thanh, xa khanh, va hanh
y nang » ky nang, ly nang, v nang
ma hoi » mai hoi, ma hoa, me hoi
va cam » va cham, va cao, va cai
tai ve » tai va, tai he, tai le

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 y nang ((ma hoi) or (xa hoi)). hieu ((va cam) or (va cac)) tuc xa hanh tai ve triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach y nang ((ma hoi) OR (xa hoi)). hieu ((va cam) OR (va cac)) tuc xa hanh tai ve triet.
• Adding a wildcard symbol may retrieve word variants: su sach y nang ((ma hoi) or (xa hoi)). hieu ((va cam) or (va cac)) tuc xa hanh tai ve triet*.