Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
van tham » van thanh, van tuan, van chat
tham doc » than doc, tham do, tham nuoc
van hanh » van thanh, ban hanh, van anh
dinh cuu » dinh chi
ky tang » ky nang, ky dang, kho tang
tang xa » trang xa, tang ma, lang xa
doc van » do van, hoc van, duc van
te sac » te sach, te cac, te san
sac ky » cac ky, sai ky
vi cuu » vi luu, vinh cuu

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 van tham doc van hanh ((vi cuu) or (dinh cuu)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sac ky tang xa hoi. hieu van tham doc van hanh ((vi cuu) OR (dinh cuu)) tre.
• Adding a wildcard symbol may retrieve word variants: te sac ky tang xa hoi. hieu van tham doc van hanh ((vi cuu) or (dinh cuu)) tre*.