Perhaps you should try some spelling variations:
kham truc » nham thuc, pham thuc, kham trai
sang mai » sang ma, sang tai, lang mai
doan vi » doan va, don vi, doan thi
truc va » thuc va, thuc vat, trung va
sach ly » sach lo, sach ty, sach hay
vu kham » vu khanh
hieu vu » hieu va, hieu ve, hieu su
mai hoi » mai khoi, dai hoi, lai hoi
dan vi » don vi, dan va, gan vi
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: tu ((sach ly) or (sach y)) sang mai hoi. hieu vu kham truc va ((dan vi) OR (doan vi)) cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach ly) OR (sach y)) sang mai hoi. hieu vu kham truc va ((dan vi) OR (doan vi)) cua te*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((sach ly) or (sach y)) sang mai hoi. hieu vu kham truc va ((dan vi) OR (doan vi)) cua te*".