Perhaps you should try some spelling variations:
hanh than » hanh han, hanh nhan, hanh phan
trang xa » trang va, trang ha, trong xa
van hanh » van thanh, ban hanh, van anh
than cua » nhan cua, thai cua, ban cua
tang xa » tang ma, lang xa, tang ha
hieu ve » hieu va, hieu van
cam duc » cam xuc, cao duc, pham duc
duc van » duc va, duc tan, duc manh
cua tre » cua te, cuu tre, cua triet
su sai » su tai, su hai, su dai
sai ky » sac ky
ve cam » ve cham, ve cac, va cam

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sai ky ((tang xa) or (trang xa)) hoi. hieu ve cam duc van hanh than cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sai ky ((tang xa) OR (trang xa)) hoi. hieu ve cam duc van hanh than cua tre.
• Adding a wildcard symbol may retrieve word variants: su sai ky ((tang xa) or (trang xa)) hoi. hieu ve cam duc van hanh than cua tre*.