Perhaps you should try some spelling variations:
vai cua » dai cua, hai cua, lai cua
va hanh » van hanh, va thanh, va danh
cac duc » cac du, cao duc, cac dac
hieu ve » hieu va, hieu van
nang ma » tang ma, sang ma, nang cao
tu sach » thu sach, su sach, te sach
ma hoi » mai hoi, xa hoi, ma hoa
ve cac » va cac, vien cac
di cua » dai cua, doi cua, de cua
tu sac » tu cac, tu san, tu bac

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((tu sac) OR (tu sach)) ky nang ma hoi. hieu ve cac duc va hanh ((di cua) or (vai cua)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sac) OR (tu sach)) ky nang ma hoi. hieu ve cac duc va hanh ((di cua) OR (vai cua)) tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sac) OR (tu sach)) ky nang ma hoi. hieu ve cac duc va hanh ((di cua) or (vai cua)) tre*".