Perhaps you should try some spelling variations:
trinh van » trinh han, trinh quan, trinh toan
chuan ted » chuan he
pham duy » pham duc
va trinh » van trinh, va tinh, lap trinh
bach ty » sach ty, xach tay, bach thu
xang xa » lang xa, mang xa, ang xa
hieu va » lieu va, hieu qua
va pham » van pham, va phat, va phap
chua tu » chu tu, cua tu, chua cu
duy va » duy vat, duy van, day va
cua te » cua tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu bach ty xang xa hoi. hieu va pham duy va trinh van ((((chuan ted) or (cua te))) or (chua tu))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu bach ty xang xa hoi. hieu va pham duy va trinh van ((((chuan ted) OR (cua te))) OR (chua tu)).
• Adding a wildcard symbol may retrieve word variants: vu bach ty xang xa hoi. hieu va pham duy va trinh van ((((chuan ted) or (cua te))) or (chua tu))*.