Perhaps you should try some spelling variations:
sinh thu » sinh thuc, minh thu, sinh tu
thu nang » thi nang, thu hang, thu bang
van hanh » van thanh, ban hanh, van anh
vien cac » vien bach, vien dai, vien da
ve cham » va cham, ve chat, vu cham
luc van » luoc van, luu van, duc van
nang ma » tang ma, sang ma, nang cao
ma hoi » mai hoi, xa hoi, ma hoa
vi cua » vai cua, di cua
de cua » le cua, te cua, dieu cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc sinh thu nang ma hoi. hieu ((ve cham) or (vien cac)) luc van hanh ((vi cua) or (de cua)) viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc sinh thu nang ma hoi. hieu ((ve cham) OR (vien cac)) luc van hanh ((vi cua) OR (de cua)) viet.
• Adding a wildcard symbol may retrieve word variants: hoc sinh thu nang ma hoi. hieu ((ve cham) or (vien cac)) luc van hanh ((vi cua) or (de cua)) viet*.