Perhaps you should try some spelling variations:
hanh vai » hanh vi, hanh va, hanh tai
van hanh » van thanh, ban hanh, van anh
nang cau » nang cao, hang cau, nang dau
hieu va » lieu va, hieu qua
vai cua » dai cua, hai cua, lai cua
tuc van » thuc van, truc van, tuc va
cam tuc » cam xuc, cam tu, nam thuc
sach ky » sac ky, sach kem, sach hay
sach ty » sach tu, sach thu, xach tay
va cam » va cham, va cac, va cao
cua te » cua 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 ky) OR (sach ty))) or (sach y)) nang cau hoi. hieu va cam tuc van hanh vai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su ((((sach ky) OR (sach ty))) OR (sach y)) nang cau hoi. hieu va cam tuc van hanh vai cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su ((((sach ky) OR (sach ty))) or (sach y)) nang cau hoi. hieu va cam tuc van hanh vai cua te".
• Adding a wildcard symbol may retrieve word variants: su ((((sach ky) OR (sach ty))) or (sach y)) nang cau hoi. hieu va cam tuc van hanh vai cua te*.