Perhaps you should try some spelling variations:
su triet » su viet, su tien, ve triet
nang mai » nang ma, nang tai, lang mai
van hanh » van thanh, ban hanh, van anh
hanh ki » hanh vi, hanh ky, hanh kien
xuc van » duc van, luc van, vuc van
hieu va » lieu va, hieu qua
sach xu » sach xa, cach xu, sach tu
cach tu » cach thuc
mach xu » cach xu, mach cua, mach dau
mai hoi » mai khoi, dai hoi, lai hoi
va cam » va cham, va cac, va cao
ki su » ky su

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 xu) or (mach xu))) or (cach tu)) nang mai hoi. hieu va cam xuc van hanh ki su triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((((sach xu) OR (mach xu))) OR (cach tu)) nang mai hoi. hieu va cam xuc van hanh ki su triet.
• Adding a wildcard symbol may retrieve word variants: tu ((((sach xu) or (mach xu))) or (cach tu)) nang mai hoi. hieu va cam xuc van hanh ki su triet*.