Perhaps you should try some spelling variations:
thuat lanh » thuat lap, thuat san
thuat bai » thuat bao, thuyet bai, thuat xay
de phong » den phong, du phong, ve phong
hieu van » hieu va, thien van, lieu va
cong de » cong da, cong ve, cong dieu
dieu va » dieu van, lieu va, dien va
thong » trong

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((thuat lanh) or (thuat bai)) thanh cong de phong ((dieu va) or (hieu van)) truyen thong~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thuat lanh) OR (thuat bai)) thanh cong de phong ((dieu va) OR (hieu van)) truyen thong.
• Adding a wildcard symbol may retrieve word variants: ((thuat lanh) or (thuat bai)) thanh cong de phong ((dieu va) or (hieu van)) truyen thong*.