Perhaps you should try some spelling variations:
trinh vi » trinh va, trinh ve, trinh viet
thu sai » thu hai, thu tai, thu san
nang ma » tang ma, sang ma, nang cao
van cac » van cau, van bac, dan cac
van hac » van hoc, van ha, van hai
dat lap » dan lap, dat lam, dat lai
sai ky » sac ky
ma hoi » mai hoi, xa hoi, ma hoa
vi cua » vai cua, di cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu sai ky nang ma hoi. hieu ((van cac) or (van hac)) dat lap trinh vi cua vat~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sai ky nang ma hoi. hieu ((van cac) OR (van hac)) dat lap trinh vi cua vat.
• Adding a wildcard symbol may retrieve word variants: thu sai ky nang ma hoi. hieu ((van cac) or (van hac)) dat lap trinh vi cua vat*.