Perhaps you should try some spelling variations:
hanh lai » hanh lam, hanh tai, thanh lap
van hanh » van thanh, ban hanh, van anh
lai cua » dai cua, hai cua, lai chau
xuc van » duc van, luc van, vuc van
sach tu » sach thu, sach ty, sach uu
nang ma » tang ma, sang ma, nang cao
cach tu » cach thuc
ma hoi » mai hoi, xa hoi, ma hoa
ve cam » ve cham, ve cac, ve cai
va cam » va cham, va cac, va cao
cua su » qua su

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

• Performing a fuzzy search may retrieve terms with similar spellings: te ((sach tu) or (cach tu)) nang ma hoi. hieu ((ve cam) OR (va cam)) xuc van hanh lai cua su~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te ((sach tu) OR (cach tu)) nang ma hoi. hieu ((ve cam) OR (va cam)) xuc van hanh lai cua su.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te ((sach tu) or (cach tu)) nang ma hoi. hieu ((ve cam) OR (va cam)) xuc van hanh lai cua su".
• Adding a wildcard symbol may retrieve word variants: te ((sach tu) or (cach tu)) nang ma hoi. hieu ((ve cam) OR (va cam)) xuc van hanh lai cua su*.