Perhaps you should try some spelling variations:
nang mai » nang ma, nang tai, lang mai
hieu van » hieu va, thien van, hieu ve
cham hoc » cham soc, chat hoc, cham hoi
dan hang » ban hang, van hang, dat hang
te sach » toc sach
mai hoi » mai khoi, dai hoi, lai hoi
hang ve » hang va, hanh ve, hang ke
cua tre » cua te, cuu tre, cua triet
y nang » ky nang, ly nang, v nang
ve cua » le cua, de cua, te cua

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 y nang mai hoi. ((hieu van) or (lieu va)) cham hoc dan hang ve cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach y nang mai hoi. ((hieu van) OR (lieu va)) cham hoc dan hang ve cua tre.
• Adding a wildcard symbol may retrieve word variants: te sach y nang mai hoi. ((hieu van) or (lieu va)) cham hoc dan hang ve cua tre*.