Perhaps you should try some spelling variations:
van hanh » van thanh, ban hanh, van anh
hai chu » hai chau, hoi chu, hai chi
hai cau » hai chau, hai hau, hoi cau
xuc van » duc van, luc van, xuc ban
tu sach » thu sach, te sach, tu cach
hieu ve » hieu va, hieu van
nang ma » tang ma, sang ma, nang cao
su sach » so sach, vu sach
ma hoi » mai hoi, xa hoi, ma hoa
y nang » ky nang, ly nang, v nang
ve cam » ve cham, ve cac, va cam

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((tu sach) or (su sach)) y nang ma hoi. hieu ve cam xuc van hanh ((hai cau) or (hai chu)) treo~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (su sach)) y nang ma hoi. hieu ve cam xuc van hanh ((hai cau) OR (hai chu)) treo.
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (su sach)) y nang ma hoi. hieu ve cam xuc van hanh ((hai cau) or (hai chu)) treo*.