Perhaps you should try some spelling variations:
hanh vai » hanh vi, hanh va, hanh tai
van hanh » van thanh, ban hanh, van anh
thu hang » thi hang, thuc hanh, thu huong
tu cach » tu cac
ve cham » va cham, ve chat, vu cham
luc van » luoc van, luu van, duc van
te sach » toc sach
hang ha » hang hoa, hang hai, hoang ha
vai cua » dai cua, hai cua, lai cua
ve cam » ve cac, va cam, ve cai
ha hoi » hoa hoi, ha noi, xa hoi

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((tu cach) or (te sach)) thu hang ha hoi. hieu ((ve cam) or (ve cham)) luc van hanh vai cua vat~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu cach) OR (te sach)) thu hang ha hoi. hieu ((ve cam) OR (ve cham)) luc van hanh vai cua vat.
• Adding a wildcard symbol may retrieve word variants: ((tu cach) or (te sach)) thu hang ha hoi. hieu ((ve cam) or (ve cham)) luc van hanh vai cua vat*.