Perhaps you should try some spelling variations:
truc van » truc va, thuc van, truc ban
va trien » va truyen, va thiet, va tuyen
ky tang » ky nang, ky dang, kho tang
tang xa » trang xa, tang ma, lang xa
hieu ve » hieu va, hieu van
hanh de » hanh kem
hanh ve » hanh vi, hanh va, hanh kem
te sac » te sach, te cac, te san
sac ky » cac ky, sai ky
ve cau » ke cau, va cau, ve cac

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sac ky tang xa hoi. hieu ve cau truc van ((hanh de) or (hanh ve)) va trien~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sac ky tang xa hoi. hieu ve cau truc van ((hanh de) OR (hanh ve)) va trien.
• Adding a wildcard symbol may retrieve word variants: te sac ky tang xa hoi. hieu ve cau truc van ((hanh de) or (hanh ve)) va trien*.